Lesson 3: Classification keys

Combine one set of the Resource: Invertebrate cards and the Resource: Vertebrate cards from Lesson 1: Vertebrates and invertebrates and place them facedown on a table, obscuring the images.

Split the class into two equal teams and choose one team to start the first round. For each round:

1. Invite one member from the playing team to select a card from the pile.

2. Allow the member to either draw and label the animal on a flipchart or act out the animal's characteristics, ensuring not to give away the animal's name.

3. Ask the playing team to guess the animal's identity and specify its category: vertebrate or invertebrate.

4. Award a point to the team if they correctly identify and classify the animal.

5. Alternate turns between the two teams, repeating steps 1–5.