English: Two high school students construct a double-arched bridge using slightly tapered blocks. This construction activity was one of many hands-on activities offered at a "Discovery Day" held by Big Brother Mouse, a literacy project. The challenge was to make one simple arched bridge; this was the first group to add a second level. Creative, interactive educational opportunities are rare in Laos. The Discovery Days organized by Big Brother Mouse include anatomy models, construction toys, electronic experiments, microscopes, and puzzles.