Keep your students thinking all year long with these 38 weekly brain teasers for grades 3-5. These engaging activities are designed to build problem-solving, critical thinking, reasoning, creativity, and grade-level math skills in a fun and meaningful way.Beginning with simple warm-up style teasers and moving into more in-depth challenges, students will draw, model, explain their thinking, solve multi-step problems, look for patterns, and even use SCAMPER to create new ideas. Many of the activit