1. 4/29 & 4/ th Grade Agenda
Learning Objective: Learn about Snails & insects
Collect HW: Reading & Notetaking 207 – 208
Snail Lab
Video: Life in the Undergrowth
Textbook Reading 434 – 438
HW: Reading Notetaking 209 – 212

2. Reflection
Prompt: Write 3 facts that you know about mollusks.

3. What are Arthropods? Arthro = “Jointed” Pod = “Foot” Insects Spiders
Scorpions
Lobster
Crab
Shrimp
Centepedes

4. Comparing Arthropods

5. What are Crustaceans? two or three body sections
five or more pairs of legs
two pairs of antennae.

6. Crustaceans

7. What is Metamorphosis?
Process in which an animal’s body undergoes dramatic changes during its life cycle
This is a picture of a Crab Larva

8. Some arthropods have blue blood
Horseshoe crabs have blue blood
The have hemocyanin (which contains copper) instead of hemoglobin (which contains iron) in their blood
They are more closely related to spiders and scorpions
Has not changed much in 450 million years

9. What are Arachnids? Ticks, Mites, Scorpions & Spiders
two body sections
four pairs of legs

10. Which type of animal is most numerous in the world?
Insects! 73% of all animal species are insects.
Which type of animal is most numerous in the world?

11. What are the characteristics of insects?
Invertebrates (Doesn’t have a backbone)
Exoskeleton (Exo = outside, skeleton)
Arthropod (Arthro = joined, Pod = Leg)
3 pairs of legs
1 pair of antennae
Most insects have wings

12. What are Insect’s Three Body Sections?
Head
Thorax
Abdomen

13. What is found on an insect’s Head?
Head: Most of an insect’s sense organs, such as the eyes, mouth and antennae, are located on the head.

14. What is found on an insect’s Thorax?
Thorax: An insect’s midsection is the section to which wings and legs are attached.

15. What is found on an insect’s Abdomen?
Abdomen: Inside the abdomen are many of the insect’s internal and sexual organs. Small holes on the outside of the abdomen allow air, which contains oxygen, to enter the body.

16. How big is the world’s largest Insect
Titan Beatle
7 inches long

17. Can you spot an insect here?
Dead Leaf mantis
Sand Grasshopper

18. Can you spot an insect here?
Walking stick insect
Grasshopper