🕵️♂️ Turn Finger-Counters into Math Detectives!Are your 2nd graders still counting on their fingers for basic addition? Transform your math block with Mental Math Detectives, a complete, 60-minute lesson designed to move students from concrete counting to abstract fluency. This "no-prep" resource guides students through the investigation of number relationships, helping them solve "The Case of the Slow Solvers" using the most powerful tools in 2nd Grade math: The Make-10 Strategy and Near-Do