Praying Mantis Life Cycle Stages, Children can see how Praying Mantises change as they grow with Insect Lore’s Praying Mantis Life Cycle Stages. Four stages of Mantis development: Soft Egg Case, Hardened Egg Case, Nymphs and Adult Praying Mantis.
Seismograph Model creates a visual representation of the shock waves generated by an earthquake, Use to teach both mathematical and geological concepts by manually pulling the paper strip and recording simple movements made by jumping or moving, Pencil not included