Yolanda's Yard Sale: Add and Subtract Within 20 (Core Math Skills: Operations and Algebraic Thinking)

Algebra is a foundational concept in the study of mathematics, and readers will delight in learning the principles of operations and algebraic thinking in a relatable and engaging way. Topics such as adding and subtracting within 20, using algebraic principles to solve equations and word problems, and understanding the relationship between addition and subtraction will give beginning math students a firm grasp on basic math concepts. Yolanda's family is having a yard sale, and by selling items from her home, she can demonstrate her ability to fluently subtract within ten. This volume meets CCSS Math Standard 1.OA.C.6. This book should be paired with "At the Block Sale" (9781477721575) from the InfoMax Math Readers Program to provide the alternative point of view on the same topic. Read more