Submitted by Allie.Groll on Tue, 06/29/2021 - 21:07 Source Winter Newsletter Poster Image Image Poster PDF File 0809-crossriver.pdf Poster Solution File CrossingRiver Solution.pdf Math topic Algebraic Expressions and Equations General Math Resource Type Poster Section Resources Poster Date 2009-02-01 CCSS (Common Core State Standard) 6.EE.6 6.RP.3 Difficulty Medium