Stop and Go, Yes and No: What Is an Antonym? (Words Are CATegorical ®)

Pitch and Throw, Grasp and Know: What Is a Synonym? (Words Are CATegorical ®)

But and For, Yet and Nor: What Is a Conjunction? (Words Are CATegorical ®)

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

Under, Over, By the Clover: What Is a Preposition? (Words Are CATegorical ®)

A Fraction's Goal — Parts of a Whole (Math Is CATegorical ®)

Feet and Puppies, Thieves and Guppies: What Are Irregular Plurals? (Words Are CATegorical ®)

Skin Like Milk, Hair of Silk: What Are Similes and Metaphors? (Words Are CATegorical ®)

Breezier, Cheesier, Newest, and Bluest: What Are Comparatives and Superlatives? (Words Are CATegorical ®)

I'm and Won't, They're and Don't: What's a Contraction? (Words Are CATegorical ®)

Slide and Slurp, Scratch and Burp: More about Verbs (Words Are CATegorical ®)