Frances Zweifel

365 Simple Science Experiments With Everyday Materials

By E. Richard Churchill, Louis V. Loeschnig, Muriel Mandell, Frances Zweifel

Simple Nature Experiments with Everyday Materials

By Anthony D. Fredericks, Frances Zweifel

Simple Kitchen Experiments: Learning Science with Everyday Foods

By Muriel Mandell, Frances Zweifel

Physics

By Bob Bonnet, Dan Keen, Frances Zweifel, Bob Bonnett