Learn about patterns that appear in nature.

Describes estimating and how it is used to determine times and amounts.

Discover the nature of symmetry as it appears in nature and the manmade world in Both Sides Are the Same.

In Measuring Time, children learn how we measure everything from seconds to years.

In Shapes, children review common shapes and then see how these can be combined to make different shapes. Two triangles can make a square, two squares can make a rectangle, and so on.

Fractions introduces beginning concepts such as half, thirds, and fourths by showing how parts of common items make a whole.

Take a hike through the rain forest and look at all of the beautiful animals and plants that live there, and learn about ordinal numbers at the same time.

Take a hike through the rain forest and look at all of the beautiful animals and plants that live there, and learn about ordinal numbers at the same time.

In Shapes in the City, children can see that there are shapes all around them. Photographs of city scenes feature squares, rectangles, triangles, and all kinds of interesting shapes.

Graphs are useful ways to show information about lots of things. In this book, readers will find out how to make and read different kinds of simple graphs.