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Scientific Reasoning


G1-81: OUIJA WINDMILL

Purpose: Illustrate a combination of simultaneous orthogonal oscillations.

B4-04: SPRING AND STRING THING

Category: B4 Elasticity

Purpose: Illustrate series and parallel springs in a counterintuitive way.

C5-41: HOURGLASS PROBLEM

Purpose: Demonstrate the solution to the famous "hourglass problem," or Galileo's water bucket

B3-15: FOOL'S TACKLE

Category: B3 Simple Machines

Purpose: Illustrate analysis of forces in a pulley system

B2-41: ROBERVAL BALANCE

Purpose: Demonstrate a paradox in equilibrium of forces and torques

B1-12: CENTER OF MASS - HINGED STICK PARADOX

Purpose: Illustrate the center of mass in a surprising way

G2-07: PSYCHOACOUSTIC VIBRATION TRANSDUCER

Purpose: Challenge your students to recognize pseudoscience while illustrating resonance

C5-02 SPRING AND PULLEY PARADOX

Purpose: Show that the action-reaction pairs have equal magnitude
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