Hyman Ruchlis

• Clear thinking
• How do you know it's true?
• How a rock came to be in a fence on a road near a town
• Orbit
• Reality-centered learning
• The story of mathematics; geometry for the young scientist
• Bathtub physics
• Discovering scientific method, with science puzzle pictures
• Exploring physics
• Guidelines to education of nonreaders
• Phonic word builder,
• Science projects