The Mission of Addition (Math Is CATegorical ®)

The Action of Subtraction (Math Is CATegorical ®)

A Dollar, a Penny, How Much and How Many? (Math Is CATegorical ®)

A Second, a Minute, a Week with Days in It: A Book about Time (Math Is CATegorical ®)

How Long or How Wide?: A Measuring Guide (Math Is CATegorical ®)

To Root, to Toot, to Parachute: What Is a Verb? (Words Are CATegorical ®)

If You Were a Plus Sign (Math Fun)

The Grapes of Math

On the Scale, a Weighty Tale (Math Is CATegorical ®)

A Mink, a Fink, a Skating Rink: What Is a Noun? (Words Are CATegorical ®)