Estimation Meets Math Mysteries

Introducing Esti-Mysteries! Each image invites students to wonder what number is represented by the image. As you click through the each Esti-Mystery, clues will appear that will allow the students to use math concepts to narrow the set of possibilities to a small set of numbers. In the end, the students will need to call upon their estimation skills to solve the mystery and find the missing number.

Level 100 (Grades K-2)

Level 200 (Grades 1-3)

Level 300 (Grades 3-8)

Level 400 (Grades 3-12)