Common Core Standards: 1.MD.A.2

exercise By Josie Fixler7/29/2014

Common Core Standards: 1.G.A.11.G.A.3

exercise By Emily Lauer9/2/2014

Tags: unit fractions, first grade, , fractions, story problem

exercise By Christopher Della Fave2/21/2019

Tags: Tech for Success Math K-2

Common Core Standards: 1.NBT.B.2a

exercise By Josie Fixler8/18/2014

Common Core Standards: 1.NBT.B.3

exercise By siddhi vinayaka12/31/2013

Tags: Comparing Numbers, Comparing Numbers.

Common Core Standards: 1.NBT.B.3

exercise By siddhi vinayaka12/31/2013

Tags: Comparing Numbers., Comparing Numbers

exercise By MATTHEW STEEN10/2/2023

exercise By Erick Buckley8/31/2023

Common Core Standards: 1.OA.C.61.OA.D.71.OA.D.8

exercise By Josie Fixler6/4/2014

exercise By Josie Mittleman8/15/2017

Tags: biology, cell