00890cam a2200181 4500 437538921 TxAuBib 20200917120000.0 200917s2016||||||||||||||||||||||||und|u 9780545840095 0545840090 TxAuBib Krech, Bob. Problem Solved! Bar Model Math Grade 1. Teaching Resources, 2016. Help students solve word problems with confidence using the bar modeling method. Twenty mini lessons teach students how to use this effective strategy to tackle problems with addition, subtraction, measurement, money, and more. Each lesson comes with four problems that increase in difficulty, along with scaffolded instruction to support all learners. Tags: Math, Problem Solving, Model Drawing, Instruction. 20200917.