You might not be a knight in shining armor, but your pet could be. We just love that someone made this suit for his furry pet guinea pig, Lucky. Armor is metal clothing that long-ago soldiers called knights used to wear hundreds of years ago. It kept them safe from enemies swinging swords at them. Metal is stiff and heavy, though, making it hard to move around while wearing it. So the metal had to be linked together in lots of tiny pieces, like chains. That’s why it’s called “chain mail” armor. Who knows why Lucky needs chain mail — when is he going into battle with anyone? But he sure looks handsome. Looks like other guinea pig owners liked it, too: the suit sold online for more than $1,000!
Wee ones: If your guinea pig weighs 2 pounds and that little suit of armor weighs 3 pounds, which one weighs less?
Little kids: If you and Lucky suit up for battle, how many legs do you have together? Bonus: If you need to link together 60 loops to make the armor, what numbers do you say to count them off in 10s?
Big kids: If your Under Armour underwear costs $100, how many pairs could you buy instead of the $1,000 guinea-pig armor? Bonus: If you wear real metal armor that weighs 1/2 of what you weigh, and you and the armor weigh 75 pounds, what do you weigh?
Wee ones: The guinea pig weighs less.
Little kids: 6 legs. Bonus: 10, 20, 30, 40, 50, 60.
Big kids: 10 pairs. Bonus: You weigh 50, and the suit weighs 25. You’re the same as 2 suits, so the 75 pounds is like 3 suits.
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.