Loud and Quiet

by Jack Challoner

Published 1 January 1996
Introduces the concept of sound by answering questions the reader may have about loud and quiet things; provides activities which illustrate the concepts.

Wet and Dry

by Jack Challoner

Published 1 January 1996
Simple activities introduce water in relation to clouds, rain, rivers, plants, and more.

Fast and Slow

by Jack Challoner

Published 1 January 1996
A basic introduction to the concept of speed with illustrative experiments.

Hot and Cold

by Jack Challoner

Published 1 January 1996
Simple activities introduce the concepts of hot and cold in relation to melting and freezing, temperature, deserts and polar areas, and more.

Floating and Sinking

by Jack Challoner

Published 1 January 1996
Simple activities introduce the qualities of things that float in water, the difference between floating and swimming, and how balloons and airships stay up in the air.

Big and Small

by Jack Challoner

Published 1 January 1996
An introduction to the concept of size, describing how sizes are measured, comparing sizes of such things as plants, animals, and buildings, and providing related activities.

Push and Pull

by Jack Challoner

Published 1 January 1996
Introduces the basic concepts of pushing and pulling in different situations.

Light and Dark

by Jack Challoner

Published 1 January 1996
Simple activities introduce light in relation to day and night, the sun and the stars, shadows, black and white, and more.