Activity 2C: Let’s Meet the Invertebrates
Overview
Students explore 3-5 invertebrate groups (e.g., crustaceans, mollusks) over several days, focusing on unique features. A class chart titled “Meet the Invertebrates” organizes details like traits, examples, and habitats. Students draw and label invertebrates to add to the chart and their science notebooks.
Focus Questions
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What are the unique characteristics of the different groups of marine (or freshwater) invertebrates?
Enduring Understandings
- Plants and animals can be sorted into groups based on different characteristics.
Engage
10-20 minutes per day for 2-5 days
Tell your students they are going to “meet” some interesting animals with unique features that live in the ocean or freshwater lakes/ponds. Scientists group these animals together because they have similar features. Choose 3-5 groups of invertebrates (crustaceans, mollusks, echinoderms, worms, sponges, etc.), and introduce 1 or 2 groups each day. Describe some of the unique features of each group; then list some of the animal species in the group. If you can find or make appropriate puppets, use them to “talk” with your students. For example, an octopus puppet could tell all about the mollusk group. See the Teacher Background Information for information about marine and freshwater invertebrates.
Explore
Make a large class chart with the title: “Meet the Invertebrates” . Each category of invertebrate will have a column with labels of “what, who, how, where, and traditional use”. When you’ve finished introducing the invertebrate and describing each group’s unique characteristics as a class, fill in the chart.
Explain
20 minutes
When the invertebrates have been introduced, and the chart has been created with the students, have the students divide into groups and draw detailed pictures to add to the chart. Each group will draw one species from their assigned category (mollusk, echinoderm, crustacean, etc.) that is most applicable to the local area. Students will cut out their drawing and add it to the class chart (Meet the Invertebrates).
Elaborate
15 Minutes
Have students take a closer look at one animal within a category of invertebrates and use their science notebook to draw it and/or write their observations. They will use field guides, posters, and books for detailed pictures of each invertebrate. Drawings might be detailed sketches with labels of specific features.
Extend
2-3 days
Introduce and play the Dice Toss game to learn about statistics and probability to reinforce their knowledge of invertebrate species.
Evaluate
Before students begin their science notebook entries, create a checklist with them to make sure they include everything needed in the science notebook entry—title, picture, label, etc. Use the list that they made to evaluate their work.
Teacher Needs
Teacher Prep
- Collect and organize materials.
- Prepare science notebooks.
- Create templates for class charts on chart paper in advance.
- Create a template for class “Creature Features” book pages.
- Read Teacher Background for more information.
Substitutions: In Activity A, shells of marine or freshwater animals can be collected, borrowed, or purchased. Those collected from nearby beaches are best. If shells are not available, substitute buttons, pattern blocks, pressed or fresh plants, bones or animal parts (teeth, beaks, tusks, etc.) or rocks in the sorting activities.
It will be helpful to have a list of local aquatic creatures, or a book that assists children in starting to know what is in their local environment. Posters, charts, and field guides are also useful as resources.
Materials List
- Science notebooks
- A large quantity of shells (or substitutes)
- Shell Observation page
- Shell Property Chart
- Chart paper
- Yarn loops (about 1 yard long)
- Books: Seashells by the Seashore and Creature Features
- Alaska Native art forms of local animals
- Pictures and sketches of animals
- What Do You Know? game board
- What Do You Know game cards
- Dice (2 per board)
- Markers for players
For extensions:
- Graph or grid paper, 1 inch and ½ inch
- Unifix cubes or wood block cubes for measuring length
- Dried lima beans and kidney beans
- Animal Dice
- Shell Sort Continuum
- Meet the Invertebrate chart
- Math Story Problems
Student Needs
Prior Knowledge
Students should be able to take turns and listen to one another. They should have experience using describing words. Prior sorting opportunities would be helpful. They should know or learn how to write “clues” without giving too much information.
Vocabulary
characteristics, color, comparison, crustacean, describe, details, echinoderm, estimate , features, invertebrate, length, measurement, mollusk, size, shape, sort, texture, venn diagram, weight
Words for specific animal parts: antennae, claws, jaws, legs, pincers etc.
Standards
Science GLEs Addressed
K-12 Standards A2, C2, G4
Ocean Literacy Principles
- The ocean supports a great diversity of life and ecosystems.