Counting Blood Cells

Subject: Mathematics, Problem Solving
Topics: Estimation
Common Core State Standards: 3.OA.1 3.OA.7 4.NBT.3
Grade Levels: 3rd Grade, 4th Grade, 5th Grade,

How Many Bugs?

Subject: Mathematics
Topics: Estimation
Common Core State Standards: 4.NBT.3
Grade Levels: 3rd Grade, 4th Grade, 5th Grade,