Grades 2 & up. Hands-on Investigation Kit supports building a variety of real-world models that demonstrate science and technology concepts. Students will explore through hands-on investigation 1st, 2nd and 3rd Class levers along with fixed, movable and combination pulley systems. Includes building instructions for 8 different models with real-life photo and key facts. Complete set includes 178 K'nex rods and connectors in a sturdy, divided case, teaching resource CD (with teaching notes, building projects and extension activities) and student building guide.
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