If you like cake or waffles, this amazing dessert has both! The recipe for Chocolate-Raspberry Waffle Cake also has tons of math. First, you pour chocolate cake batter into a hot waffle iron to make a flat circle with little square dimples. Then you mix raspberries, sugar, and heavy cream to make berry-flavored whipped cream. Finally, you stack a waffle, then pink cream, then melted chocolate (!), then another waffle, then cream…and so on until you have 7 layers of each. Top it with MORE melted chocolate and a few fresh berries, and it adds up to yummy!
Wee ones: How many sides does a square have? Try to find 3 little square things in your room.
Little kids: If you layer waffles, then cream, then chocolate, then start over with waffles, then cream…what will the next layer be? Bonus: If you stack 3 full sets of waffle, cream, and chocolate, how many layers do you have in total?
Big kids: If your cake has 47 layers in total (with a waffle as the 1st bottom layer, then cream, then chocolate), what ingredient is the top layer? Bonus: Which layer is the exact middle layer — and what ingredient is it?
The sky’s the limit: If your cake has 124 layers, does it have complete sets of waffle-cream-chocolate with no leftovers? Find out the trick for seeing if a numbers is divisible by 3!
Wee ones: 4 (equal) sides. Items in your room might include book covers, squares on plaid or checkerboard clothes, and window panes.
Little kids: Chocolate. Bonus: 9 layers of ingredients.
Big kids: Cream, since the 45th layer was chocolate to complete a set of 3. Bonus: The 24th layer (23 below it, 23 above it), which is chocolate since it completes a set of 3.
The sky’s the limit: No, it doesn’t have complete sets. If a number is divisible by 3, its digits must add up to a multiple of 3, too. 123 is a multiple since 1+2+3 = 6, and 6 is 2×3. So 124 has 1 leftover layer.
Laura Bilodeau Overdeck is founder and president of Bedtime Math Foundation. Her goal is to make math as playful for kids as it was for her when she was a child. Her mom had Laura baking before she could walk, and her dad had her using power tools at a very unsafe age, measuring lengths, widths and angles in the process. Armed with this early love of numbers, Laura went on to get a BA in astrophysics from Princeton University, and an MBA from the Wharton School of Business; she continues to star-gaze today. Laura’s other interests include her three lively children, chocolate, extreme vehicles, and Lego Mindstorms.