00653cam a2200169 4500 145672293 TxAuBib 20131014120000.0 131014|||||||||||||||||||||||||||||und|u 9781452255453 1452255458 TxAuBib Bender, William. Differentiating Math Instruction, K-8 : Common Core Mathematics in the 21st Century Classroom. This text is like no other, successfully blending the best of what technology has to offer with guidelines for meeting the objectives set forth by the Common Core. 20131014.