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Insects, Arachnids and Arthropods

Learning Module

Abstract

This science module for kindergarten - year 2 students looks at the difference between the classification of insects, arachnids and arthropods, their life cycles and their importance to our ecosystem.

Keywords

Insects, Arachnids, Arthropods, Classification, Life Cycles, Science

Knowledge Objectives

Kindergarten - Year 2: Curriculum focus: awareness of self and the local world

Young children have an intrinsic curiosity about their immediate world. Asking questions leads to speculation and the testing of ideas. Exploratory, purposeful play is a central feature of their investigations.

In this stage of schooling students’ explorations are precursors to more structured inquiry in later years. They use the senses to observe and gather information, describing, making comparisons, sorting and classifying to create an order that is meaningful. They observe and explore changes that vary in their rate and magnitude and begin to describe relationships in the world around them. Students’ questions and ideas about the world become increasingly purposeful. They are encouraged to develop explanatory ideas and test them through further exploration.

Science Understanding

Biological sciences: 

Kindergarten: Living things have basic needs, including food and water (ACSSU002)

Year 1: Living things have a variety of external features (ACSSU017)

Year 2: Living things grow, change and have offspring similar to themselves (ACSSU030)

Science as a Human Endeavour

Nature and development of science: Science involves exploring and observing the world using the senses (ACSHE013)

Science Inquiry Skills

Questioning and predicting: Respond to questions about familiar objects and events (ACSIS014)

Planning and conducting: Explore and make observations by using the senses (ACSIS011)

Processing and analysing data and information: Engage in discussions about observations and use methods such as drawing to represent ideas (ACSIS233)

Communicating: Share observations and ideas (ACSIS012)

1. What is a Minibeast?

For the Student

Learning Intention: To ask questions about minibeasts..

Brainstorm with your buddy what a mini beast is. What animals could be a minibeast? 

Now look at the picture of a mini beast with your partner.

What questions do you have about your minibeast? Write your questions on post it notes.

Write the name and draw a picture of your favourite minibeast.

Are minibeasts living things? Let's make a class definition of a minibeast.

Fig. 1: These are all minibeasts - can you name each one?

For the Teacher

 

Students can record questions or the teacher can scribe them. Then students place the post-its on a white board and organise them in an Affinity Diagram.

Then as a class define mini beasts as being one of three groups - insects, arachnids and arthropods - on a concept map centering on minibeasts. For each group record physical characteristics and examples. Then move to a definition of an invertebrate.


A minibeast, also called an invertebrate, is a creature without either a backbone or an internal skeleton.  Humans have backbones and internal skeletons so are called vertebrates.
 
There are many different kinds of invertebrates, around 40,000 species in Britain alone, and millions across the rest of planet Earth.
 
Butterflies, moths, dragonflies, centipedes, spiders, scorpions, snails, beetles, crabs and worms are all invertebrates.
 
About 97% of creatures on Earth are invertebrates and without them we would not be able to survive.  They help to pollinate plants, recycle waste material, provide food for other creatures such as birds and reptiles and much, much more. MyLearning website
 
Invertebrates have been living on earth for about 550 million years and have adapted to survive in different habitats, from woodlands to desserts.
 

 

2. Life of Insects

For the Student

Learning Intention: To identify features of insects.

Watch Life of Insects by David Attenborough.

With a partner, discuss what was your favourite part of the clip.

Now as a class, let's record information we learnt about insects.

  • Name as many insects as you can.
  • Where do insects live?
  • What do insects eat and drink?
  • Is an ant strong? How do you know?
  • How do insects stay safe?
  • What sort of insects live in the desert?
  • Why is teamwork important for insects?
  • Are they living things?
Media embedded August 2, 2016

Using the title headings of arachnids, insects and arthropods, sort names and pictures of minibeasts into their correct families.

Arachnids Insects Arthropods
     
     

 

For the Teacher

You can provide a comprehension and observation sheet while watching the clip. Pause often to give students time to record ideas.

Use the following words to define types of minibeasts: arachnids (spiders having 8 legs, 2 body parts and 6+ eyes), insects (6 legs, 3 body parts and 2 eyes) and arthropods (butterflies, scorpions and centipedes).

Use pictures to help classify.There are many images available online such as the Merriam Webster Visual Dictionary Online - Animal Kingdom: Insects and Arachnids and Insect Images. Students could cut up the images, mix them up and resort them

Then create a wall chart to add under the class concept map for display/reference.

You could also have a minibeast pet such as a stick insect. The website Keeping Stick Insects is useful and the book ‘Bugs Alive – A Guide to Keeping Australian Invertebrates’ provides all you need to know to care for stick insects.

3. Hey Little Ant

For the Student

Learning Intention: To understand that mini beasts are living things.

Let's read and discuss Hey, Little Ant.

In a Timed-Pair-Share, discuss your favourite part.

Let's make a list of all the reasons for squishing/not squishing an ant

Squish the ant Don't squish the ant
   
   
   
   

Now write your own persuasive argument about why a minibeast of your choice shouldn't be "squished". Draw a picture to support your argument.

Fig. 3: Hey Little Ant
Media embedded August 2, 2016

 

For the Teacher

The purpose of this update is to build the background knowledge of students about minibeasts.

This is a persuasive story about the ant explaining to the child why he is important and should NOT be stepped upon. Emphasise the key understanding that minibeasts are living things.

4. Dot and Keeto

For the Student

Learning Intention: To understand how we should treat minibeasts.

Let's watch an excerpt from Dot and Keeto.

Let's discuss:

  • How should we treat minibeasts?
  • What purpose do minibeasts have in our ecosystem?
  • Compare small size to human size.
  • What did we learn?

Write your reflection in your book.

Media embedded August 2, 2016

 

For the Teacher

 Students watch an excerpt from the informative movie from Yorum Gross that focuses on how we should treat minibeasts, their importance to our ecosystems (explain word as our environment/world around us) and how everything looks at minibeast size.

Stop often and discuss the focus questions. Use Think-Pair-Shares so all students participate.

Check out the cockroach song - talks about their disposal of garbage.

Rally robin at the end and record as a reflection in their books. "I learnt about . . . . An interesting fact I now know is . .. . When I see a minibeast I will . . ."

5. Minibeast Hunt

For the Student

Learning Intention: To generalise the features of what makes an arachnid, insect or arthropod.

Let's search for minibeasts.

How many minibeasts are in your hula hoop?

Write your observations in your book and draw the minibeasts you observed. How are they the same and different? 

Are they arachnids, insects or arthropods? How do you know?

Fig. 5: What sort of minibeast is this? How do you know?

 

For the Teacher

 

The purpose of this activity is for students to draw together what they have learned about what features classify the different kinds of minibeasts.

Take students outside with hula hoops or skipping ropes to observe the grass for insects. In the space within the hula hoop, students look for minibeasts. Use magnifying glasses if available.

Reflect at the end and record observations.

Be very clear on expectations on how to interact with insects - No touching and gentle voices.

6. Bug Invasion

For the Student

Learning Intention: To understand why minibeasts are important to us.

Listen to the presentation about minibeasts?

Think-Pair-Share: What was your favourite part? What was one important fact that you learned about minibeasts?

Now let's complete a T-Chart about the similarities and differences you can see between the mini beasts.

How are the minibeasts the same? How are the minibeasts different?
   

Let's take our learning further. Why are minibeasts important?

First, let's look at two food chains. As minibeasts are living things they need to eat and drink. From the picture below, what do they eat? What eats them? What would happen if we took the minibeast out?

Fig. 6: Food Chain
Fig. 6a: Grassland Food Chain in Australia

 Now think about how this affects humans.

Positives of minibeasts Negatives of minibeasts

Honey!

Insect bites

 

Could we survive without them? Why/why not?

For the Teacher

CSIRO visit

Invite CSIRO Discovery Centre to visit school. The focus of the visit is on identifying types of minibeasts and their importance to our ecosystem.

Useful websites to explore the importance of minibeasts include: Minibeast Wildlife (Australian) and Minibeasts (English).

About 97% of creatures on Earth are invertebrates and without them we would not be able to survive.  They help to pollinate plants, recycle waste material, provide food for other creatures such as birds and reptiles and much, much more. MyLearning website

The positives and negatives of minibeasts are explained (in adult terms) at What If All of Earth's Insects Keeled Over? Use this as a basis for the final class T-Chart.

7. Life Cycle of a Butterfly

For the Student

Learning Intention: To identify the features and life cycle of arthropods.

Brainstorm what we know about butterflies (arthropods) in one colour.

Now let's read The Very Hungry Caterpillar.

Think-Pair-Share: What was your favourite part? Add more things you now know about arthropods to your brainstorm.

Let's create a life cycle with pictures and words.

Identify the parts of a butterfly.

Make a 3D butterfly and glue it to an A4 piece of paper. Label the butterfly and write your name on it.

Fig. 7: The Very Hungry Caterpillar

Make a 3D butterfly and glue it to an A4 piece of paper. Label the butterfly and write your name on it.

Media embedded August 2, 2016

To show what you have learnt, cut and glue the pictures and words in the right order to make a butterfly life cycle.

For the Teacher

Brainstorm what students know about butterflies, using The Very Hungry Caterpillar by Eric Carle to prompt further knowledge.

See The Children's Butterfly Site

After reading the picture book, add the new facts students have learnt to the class brainstorm in a new colour.

Discuss the stages of the life cycle and make a list of new topic vocabulary.

Use the smartboard to create an interactive life cycle.

Watch the video of The Very Hungry Caterpillar to check the work.

Identify and label the butterfly as a minbeast and the parts of its body.

Make a 3D model of a butterfly using craft rolls and coloured paper. Mount and label.

 Students use given pictures and words to create a life cycle of a butterfly for their portfolio.

8. All about Ants

For the Student

Learning Intention: To find interesting facts about ants and understand why ants are important.

Record three cool facts about ants.

Share your facts with a partner and then with the class.

Draw and label a picture of an ant. What are some of its features?

Let's use some of the facts in a class information report.

Now write your own information report using your three facts.

BIG QUESTION: What role do ants play in our ecosystem? Why are they important?

Jigsaw Activity

Each person in the class will be assigned a number from 1-4 in a home group of 4 people. 

1. All the ones then form a group. You will be given the following information.

Efficient cleaners: Ants act as decomposers by feeding on organic waste, insects or other dead animals. They help keep the environment clean. Carpenter ants, which make their nests in dead or diseased wood, considerably accelerate the decomposition process of timber. After the ants leave, fungi and bacteria grow in the galleries and break down the lignin and cellulose on large surfaces.

Each person in the group should draw a picture to illustrate the information their group has been given. Make sure you understand the information as you will have to explain it with your drawing to the people in your home group.

2. All the twos then form a group. You will be given the following information:

Ants eat: Ants are predators of other insects and their eggs. Ants eat little insects that are alive or dead, honey dew, nectar and will eat sweets like sugar, syrup and jelly. 

Each person in the group should draw a picture to illustrate the information their group has been given. Make sure you understand the information as you will have to explain it with your drawing to the people in your home group.

3. All the threes then form a group. You will be given the following information:

Ants are eaten: In their natural habitat, they are a source of food for many invertebrates and vertebrates, including woodpeckers and other insectivorous insects. Bears attack the trees where carpenter ants live to eat ant larvae and pupae.

Each person in the group should draw a picture to illustrate the information their group has been given. Make sure you understand the information as you will have to explain it with your drawing to the people in your home group.

4. All the fours then form a group. You will be given the following information:

Front line workers: By digging galleries and tunnels, ants help to aerate the soil. They till the soil by bringing pebbles and particles to the top. Like many other species of ants, carpenter ants are also efficient workers.

Each person in the group should draw a picture to illustrate the information their group has been given. Make sure you understand the information as you will have to explain it with your drawing to the people in your home group.

When you return to your home group, you will be the expert and your job is to teach others about what you learnt.

Fig. 8: An ant

For the Teacher

Using a range of resources for students to research interesting facts about ants.

  • Ants by Rob Thomas and Jan Stuchbury
  • Ants by Brian and Jillian Cutting
  • How Ants Live by John Sheridan (GR lvl16)
  •  Ant Cities by Arthur Dorros
  • Ants-Observing Nature by Stephan Savage.

See Enchanted Learning: Ants - lots of proformas for ant info, roles and body parts.

Model writing an information report using three facts from three different students. Then students can use their own three facts to write their own information reports. They can use the model for sentence starters and conjunctions.

Big Question: Information is from The ecological importance of ants

9. A Bug's Life Movie

For the Student

Learning Focus: To understand the different roles of ants in a colony.

Watch and listen for facts about ants as you watch excerpts from A Bug's Life.

Record as a class.

Create a wanted poster or ad for the ant that you want in your colony (E.g. If it's a soldier ant, it must be strong, etc.).

Media embedded August 2, 2016

 

For the Teacher

 

Watch clips from the film focusing on how ants work together, roles and responsibilities, what they eat, where they live, etc.

Pause often and record new information.

 

10. All about Bees

For the Student

Learning Intention: To understand why bees are important.

Watch the YouTube video: Why do we Need bees?.

Discuss what you learnt with a partner. Record three cool facts about bees in an information report.

Now let's make a class chart.

Causes of decreasing number of bees What could we do about it
   
   

BIG QUESTION: What role do bees play in our ecosystem? Why are they important?

Media embedded August 4, 2016

For the Teacher

 Watch the YouTube clip and respond.

Supply a range of books and print outs on bees for students to find more information after watching the YouTube clip. You could also watch excerpts from The Bee Movie (especially the scenes showing how the park goes from being alive and vibrant to dying without pollinating bees). In just showing cartoon type clips, some students may not realise the importance of the issues.

It is important to discuss solutions as well as problems for bees and relate it to the impact on humans and the ecosystem.

11. All about Flies

For the Student

Learning Intention: To understand the importance of flies.

Let's read some information about flies from eHow:

The Importance of Flies By Nicholas Rossillo

Though often considered pests, the common fly is nature's friend.
The common fly is not just a pest that breeds in dog waste and annoys human beings in their living rooms and at picnics. Flies are insects that play an important role in agriculture, in the food chain and in pollinating flowers. In fact, once you grasp just how much everyday ordinary houseflies actually do, seeing them in a whole new light isn't difficult.

Identification

Well over 100,000 species of flies are in existence. Flies belong to an order of insects called Diptera. Flies have two wings, six legs and two halteres, which are organs that allow the fly to maintain its balance and are found at the wings' base. The common housefly is also distinguishable by its compound eyes. Flies can be found in every part of the world except the North and South Poles.

Pollination

Bees are famous pollinators, but flies play a key role in pollinating flowers as well. They visit flowers to eat nectar or lay eggs, and as they travel from flower to flower, they carry pollen on their feet. Flowers that let off a strong smell are especially appealing to flies. Among the many flowers all over the globe that depend on flies for pollination are African starfish flowers, southern California's stapelia gigantean and the Dutchman's pipe of South America.

Pest Control

Flies also play a critical role in ensuring the world's food supply isn't eaten up by other insects. Many insects, in fact, that flies feast on would otherwise become agricultural pests, including beetle grubs, moth caterpillars and aphids. (Maggots eat aphids.) Some farmers will go so far as to introduce various types of flies -- especially fruit flies -- into their farms rather than rely solely on pesticides.

The Food Chain

Flies have an important place in the food chain, too, serving as a plentiful source of food for many creatures. Bats eat flies, for example, as do amphibians and many different species of fish all over the world, including many endangered species of fish. Even the waste that maggots release is beneficial: this waste supplies nutrients to many different forms of mold and fungi.

With your partner, list 3 interesting facts about flies.

Write 2 facts about why they are important.

Class discussion: What are some ways that we can stop flies that are minibeasts from annoying us without killing them?

Fig. 11: Some flies are beautiful - look closely at its features. With a partner, describe them.

 

For the Teacher

Read the passage with the class, stopping to discuss vocabulary and also to make predictions where appropriate.

The facts could be turned into an information report.

The discussion about the importance of flies and treating them as living things, could also be added to the information report

 

12. Spiders

For the Student

Learning Intention: To share what you know about spiders and learn more interesting facts.

Rally Robin what you know about spiders (where they live, appearance, what they eat) and what experiences you have had with spiders.

How do you feel about spiders? Would you keep one as a pet? Why/Why not? Why are spiders important to our ecosystem?

Using assorted books and the internet, find facts about spiders.

Draw a circle in the middle of a page and in it, draw a picture of a spider. Then create a concept map of all the facts you can find out about spiders.

Fig. 12: An example of a concept map about spiders

Include facts on appearance, habitat and how to treat them when discovered.

Now let's find out what to do if you or a friend are bitten by a spider. Lets go to a website - Kids' Health-Spider Bites to learn more.

Let's make a class chart of what to if you or a friend a bitten by a spider.

For the Teacher

Discuss student experiences and knowledge of spiders.

Research using assorted books and websites with facts about spiders.

Use a concept map to record facts. These could be combined into a class concept map.

 

13. Spiders: Arachnids or Insects?

For the Student

Learning Intention: To compare and contrast spiders and insects.

Are spiders insects? Why/Why not?

What do they have in common? What is different?

Work with a partner. One person labels a picture of a spider and the other labels an insect. List interesting facts around the diagram.

Spider Insect

After labelling, let's make a class Venn Diagram of insects and spiders.

 

For the Teacher

Spiders: Arachnids or Insects?

What makes the difference between a spider and an insect?

Arachnid: 2 body parts, 8 legs and 6+ eyes.

Insect: 3 body parts, 6 legs and 2 eyes.

14. Prey vs Predator

For the Student

Learning Intention: To understand what is a predator and what is a prey. 

Have you ever seen a spider on a web? Why are they there? What do they use webs for? Look at the different webs. Find others on the Internet. Draw a picture of your favourite one.

 

 

 

Why do spiders hide? Spiders like to eat minibeasts. What likes to eat spiders? Spiders are living things so they need to eat and drink.

Draw a picture of a food chain with a spider, its prey and its predator.

Describe your picture.

Fig. 14: A wolf spider and its prey

For the Teacher

Webs

What is purpose of webs? Compare designs from pictures on the internet.

Language

Introduce the terms of camouflage, prey, predator, poison, fangs, hunting, catching and eating.

Predators of Spiders

What hunts spiders? Why is hiding and camouflage important to them? Refer to Update 6 about the food chain.

15. A Spider Study

For the Student

Learning Intention: To apply what you have learned about spiders in an information report.

Spiders are EVERYWHERE

Research a spider of your choice. Write an information report following these headings.

  • Where do you find this spider?
  • What does it eat and drink?
  • What job does this spider do in the environment?
  • Draw a picture of the spider.
  • Life Cycle:  Complete a life cycle of a spider and add some cool facts around it.

Creative Task:

Now it's time to be really imaginative and create your own fanatstic minibeast. It could be a spider or an insect or a combination.

Fig. 15: Many minibeasts are already fantastic, like this Phidi, a harmless jumping spider in the USA

For the Teacher

Support students using appropriate vocabulary:

  • Habitat and what they live in:
  • Brainstorm places and discuss adaptations for varying environments (water, desert, city, rainforest, coast)
  • Identify the life cycle
  • Cut and glue picture of life cycle in books.

 Make this an open-ended task to cater for the diversity of students in the class. Offer a range of materials to create their fantastic minibeast.

Acknowledgements

Title: (Source); Fig. 1: Collage of minibeasts Pixabay (Source); Fig. 2: (Source); Fig. 3: Hey little Ant (Source); Fig. 5: Mayfly (Source); Fig. 6: (Source); Fig: 6a: (Source); Fig. 7: (Source); Fig. 8: Spider Pixabay (Source); Fig. 11: Calliphoridae fly on white background by Brian Gratwicke from DC, USA - (Source); Fig. 12: (Source); Fig. 13: Spider (Source); Insect (Source); Venn Diagram (Source); Fig. 14: Spiderweb 1 (Source); Spiderweb 2 (Source); Spiderweb 3 (Source); Spider and Prey (Source); Fig. 15: (Source).