7 books • 3 series
A Fraction's Goal — Parts of a Whole (Math is CATegorical)
Sparrow, Eagle, Penguin, and Seagull (Animal Groups are CATegorical)
A-B-A-B-A—a Book of Pattern Play (Math is CATegorical)
Salamander, Frog, and Polliwog (Animal Groups are CATegorical)
Windows, Rings, and Grapes — a Look at Different Shapes (Math is CATegorical)
How Long or How Wide? (Math is CATegorical)
Quirky, Jerky, Extra Perky (Words Are CATegorical)