Build your own Birdhouse Kit, Teachers, this is a great and affordable way to get your kids Design, Building while creating something practical and at the same time beneficial for the environment, Perfect size for a chickadee or finch, Comes unpainted, Assembly required
Atoms and Chemical Bonding Curriculum Learning Module provides Complete set of digital and hands-on resources, includes: Flip Chart Set; Student Learning Guide; Vocabulary Card Set; Curriculum Mastery Game; Interactive Multimedia Lesson; and Hands-On Atoms Lab.
Harmonic Motion Spring, ideal for demonstrations or hands on experiments in the physics classroom, 7 inches (18 cm) long with a maximum diameter of 1.4 inches (3.5 cm) and a spring constant (k) of 9.6 N/m