
Chalk, Vinegar, and the Secret of Seashells
Chalk, Vinegar, and the Secret of Seashells is a narrated read-aloud picture book at guided-reading Level J for ages 7–9, 15 pages long and about 4 minutes to read aloud. Every word highlights as it's read, so a growing reader can follow along.
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Page 1Have you ever found a seashell on the beach? It feels hard, smooth, and strong in your hand. A tiny living animal built that shell.
Page 2Shells are made of something called calcium carbonate. This same hard material forms coral skeletons too. It works like armor for ocean animals.
Page 3Let's try something to understand shells better. Take a piece of chalk, also calcium carbonate. Now drop it into a jar of vinegar.
Words to practise
This book has a Spell-Along set — these words are built sound by sound after reading.



