Content atlas · Bridges in Mathematics third-edition

February: Calendar Collector

Ones & Fives with Pennies & Nickels

2 published problems

1. The Fire-and-Frost Dragon Bridge — Investigate every shortest way the fire and frost dragons can swap sides of the bridge.
2. Firefly Jars — Count four glowing jars, circle the jar with five fireflies, and finish another jar to make five.