Interactive Number Equivalency (2nd & 3rd Grade)
Dream Box - Build Expressions Equal to One Hundred. Using expressions that have one to three addends, this tool engages students in understanding equivalence of numbers and expressions up to one hundred. Lesson
Dream Box - Equivalence up to One Hundred. Using two expressions that each have one to three addends, this tool engages students in understanding equivalence of numbers and expressions up to one hundred. Lesson
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
Represent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.
Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.