Subject(s): X-Mathematics (former standards - 2008), Mathematics
Grade Level(s): K, 1
Computer for Presenter, Computers for Students, Internet Connection, Basic Calculators, LCD Projector, Adobe Acrobat Reader, Java Plugin
Keywords: subtract, count, sets, number line, balanced equations, inverse, decompose, compose, zero property, additive identity, number sentence, missing addend, difference, take away
By Reviewer 1
The unit uses examples and materials up to 10, but can easily be modified to 20.
SOURCE AND ACCESS INFORMATION
Name of Author/Source: Illuminations National Council of Mathematics