Crayfish 3rd Grade

Day 1

Focus question: What is an ecosystem?

organism - any living thing Vocabulary ecosystem – all the living and nonliving things that interact in a specific area community – all of the living things in an ecosystem organism - any living thing

What do the pictures have in common? They’re all ecosystems!

Day 2

Focus question: What do animals need to grow and survive?

Vocabulary molts - to shed an outer shell in order to grow endanger - at risk of becoming extinct

Reading – Structures of Life Pages 38 – 41

What do crayfish need to survive?

Page 41, #1-4 Structures that help crayfish move in their environments are ____________________. 2. Structures that help crayfish get food in their environments are __________________. 3. Structures and behaviors crayfish use to protect and defend themselves are ________________. 4. Structures and behaviors that allow crayfish to raise offspring are ___________________.

Day 3

Review: What is an ecosystem?

Focus question: What are the structures of a crayfish?

Vocabulary crustaceans - a group of mostly aquatic animals with hard, flexible shells behaviors - the actions of an animal in response to its environment carapace - a hard outer shell that covers the main part of the body of an animal

Vocabulary pincers - an animal’s claw used for grasping antenna - the thin feeler on the head of an animal like a crayfish, an isopod, or an insect swimmerets - a small, soft leg under the tail of a crayfish

Reading – Structures of Life Pages 34 - 35

How do we treat crayfish? Brainstorm: How do we behave around crayfish? How do we treat them? How to pick up a crayfish: https://www.youtube.com/watch?v=AZSsCTcYebI

Day 4

Focus question: What are the structures of a crayfish?

Vocabulary predators - an animal that hunts and catches other animals for food appendages - legs and mouth parts

Male crayfish

Female crayfish

Eggs underneath tail

Day 5

thorax abdomen eye swimmerets short antenna tail legs pincer long antenna

Review: What are the structures of a crayfish?

Focus question: What are the functions of the structures of a crayfish?

Reading – Structures of Life Pages 36 - 37

Day 6

Review: What are the functions of the structures of a crayfish?

Focus question: What are the structures of a male and female crayfish? Pg. 35 in textbook*

Male Crayfish Shorter swimmerets Bigger pincers Narrower tails

Female Crayfish Longer swimmerets Smaller pincers Wider tails Egg pore

Study for your quiz tomorrow! thorax abdomen eye swimmerets short antenna tail Study for your quiz tomorrow! legs pincer long antenna

Day 7

Review: What are the structures of a male and female crayfish?

Focus question: What do we need to do to control a crayfish environment?

Day 8

Review: What do we need to do to control a crayfish environment?

Focus question: Why do crayfish behave the way they do?

Vocabulary to its environment behavior - the actions of an animal in response to its environment structure - any identifiable part of an organism

Day 9

Review: Why do crayfish behave the way they do?

Focus question: Why do animals have adaptations?

Video All About Animal Adaptations (FOSSweb – look under Resources by Investigation) http://www.fossweb.com/video?videoID=D2881630

Day 10

Focus question: What adaptations do crayfish have? https://www.youtube.com/watch?v=S6iiuFj5hzo Adaptation video https://prezi.com/fqomix52j1ph/adaptation-of-crayfish/ Crayfish Adaptation Prezi Turn and talk about structures.

In your notebooks… Observe your crayfish in their large environment and in their small basins. Answer the questions in your notebook: How do the crayfish adapt their behaviors when they are in their large environment all together? 2. How do their behaviors adapt to being in the small basins?

Day 11

Review: What adaptations do crayfish have?

Focus question: How do adaptations help animals survive well?

Read pgs. 42-44 Questions: What is an adaptation? What are some adaptations crayfish have for survival in their environment? What are some adaptations organisms have for movement in their environment? What are some adaptations organisms have for getting food in their environment?

Day 12

Review: What adaptations do crayfish have?

Focus question: How do adaptations help animals survive well?

Read pgs. 45-49 Questions: What are some adaptations organisms have for protecting themselves in their environment? What are some adaptations organisms have for successfully producing offspring?

Day 13

Review: How do adaptations help animals survive well?

Focus question: What adaptations do different organisms have for movement, getting food, protection, and caring for young?

How did the reading from the past two days apply to crayfish? Think about… What structures do they have that help them survive? What structures help them reproduce? What structures help them grow?

Vocabulary muscle - tissue that can contract and produce movement proboscis - a long, straw-like mouth camouflage - an adaptation that allows an organism to blend into its environment reproduce - to have offspring

Day 14

Review: What are structural and behavioral adaptations we found in our Habitat Cards yesterday?

Focus question: What adaptations do different organisms have for movement, getting food, protection, and caring for young?