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Ch-ch-ch-ch-changes! What animals change more than tadpoles? Show the life stages of frogs in this hopping biology project.
During an investigation into life forms, including amphibians, ask students to consider comparing changes in their own bodies with changes that occur as a tadpole matures into a frog. Create two lists on a classroom white board to make these comparisons using Crayola Dry Erase Markers.
Organize students into pairs to investigate this fascinating growth process. With Crayola® Erasable Colored Pencils, team members jot down notes about each stage and sketch the features that will be included on models.
Once research is complete, ask students to colver their work space with recycled newspaper. Provide each team with brown Crayola Model Magic that they will shape into a newly hatched tadpole. (If only white Model Magic is available, students can knead the brown color from a Crayola Ultra-Clean Marker into white Model Magic.) Ask students what a tadpole's gills look like at this early stage? How can they replicate this?
To form a more mature tadpole whose hind legs have appeared and head bulges where future front legs will grow. suggest students add some green Model Magic or knead green color from a washable marker to show the slight change in hue.
To create the third stage of life for this fascinating amphibian, students will blend in additional green Model Magic. This creature’s tail gets shorter as its front legs appear.
Next the immature frog’s eyes seem to grow bigger while the tail all but disappears. Front and back legs become stronger and more functional.
The final frog is all green with ready-to-leap limbs, nostrils for breathing, and a wide mouth for snatching bugs.
If time permits, invite students to color a pond for their frog display using Crayola Construction Paper Crayons.
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