In this clip, the team builds a habitat for butterflies and explores how a butterfly changes from an egg, to a caterpillar, pupa, and then a full-grown butterfly. After watching the clip, students can create butterflies with a toilet paper roll.
Ask the students to explain how they have grown from babies to children. What were some important steps in the process? What can they do now that they couldn't do before? Explain that butterflies grow and change, too. Butterflies go from an egg, to a caterpillar, pupa, and then a full-grown adult. Show some pictures as examples.
Focus the Viewing:
Tell the children they are going to watch a video segment from Bob the Builder. Ask them to count the number of stages a butterfly goes through as it grows.
Show the video segment.
Ask the children to recall the stages of a butterfly.
Print out the sample images of butterflies at different stages. Show the different stages to the students and review the process a butterfly takes to become a full-grown adult. Next, mix up the order and ask the students to place the photos in the correct order of the cycle.
Have students color a toilet paper roll a dark color to match the body of a butterfly. Next, have the students design four large circles that will be the wings. Discuss symmetry - how butterflies look the same on both sides. Glue or tape the circles onto the roll to create a full grown butterfly.
Discuss other livings things that change as they grow or other scientific cycles. For example, discuss how ice goes from solid to liquid to gas or how the seasons go from winter to spring, summer to fall. Discuss how a frog grows from an egg, to a tadpole, to a froglet, and finally an adult frog.