Bob Deweese

Weather

Arctic and Antarctica

Making Scientific Comparisons

Math on a Trip (Math is Everywhere)

Hands-On Geology

Backyard Biology

Earth, Sun and Moon

Math at the Mall

Math About Me (Math is Everywhere)

Advanced Multiplication

Division Basic Facts

Multiplication Basics

Math With Games

Beginning Subtraction

Addition Without Carrying

Outer Space

Advanced Subtraction

Advanced Division

Division

Basic Fractions

Addition Basic Facts

Multiplication

Advanced Addition