Sure, the Three Little Pigs built their houses out of straw, then sticks, then bricks. But did they ever think about using Lego? A while ago 1,200 people built a life-size house out of normal-sized Lego. It took them over a month! The 20-foot-tall striped house used more than 3 million bricks, and even had a bumpy bed that probably wasn’t so comfy. We’re pretty sure the Big Bad Wolf couldn’t blow it down.

*Wee ones:* If the house used 5 Lego colors but you wanted to add green, how many colors would the house use then?

*Little kids:* If the stripes were white, red, blue, yellow, black, and then started over to repeat, what color would the 12th stripe be? *Bonus:* If you stand as tall as the 20th stripe, how many full sets of 5 colors would that be?

*Big kids:* Can you write the number 3 million in digits? How many zeros do you need? *Bonus:* The volunteers started building on August 1 of that year, and finished on September 17. How many days after starting did they finish?

Answers:

*Wee ones:* 6 colors.

*Little kids:* Red: since the colors repeat in 5s, it would be the same color as the 2nd stripe. *Bonus:* 4 full sets.

*Big kids:* 3,000,000, which has 6 zeros. *Bonus:* 47 days. August has 31 days, so August 31 is 30 days after the start. Then you add another 17 days.