【實用教育app】Addition and Subtraction ~ Complete the Equation|最夯免費app-綠色工廠好玩App

This app is designed to help students master the following Common Core Math Standards:CCSS.MATH.CONTENT.1.OA.B.3 - Apply properties of operations as strategies to add and subtract.2 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)CCSS.MATH.CONTENT.1.OA.D.8 - Determine the unknown whole number in an addition or subtraction equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = _ - 3, 6 + 6 = _.CCSS.MATH.CONTENT.1.OA.C.6 - Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.First grade students need scaffolded experiences to develop problem these solving skills. This app includes 240 equation cards that are presented in 6 levels of increasing complexity. This app is also excellent for helping second and third grade students develop problem solving skills and fluency with addition and subtraction facts. The levels are: Addition within 10 Subtraction within 10 Mixed +/- within 10 Addition within 20 Subtraction within 20 Mixed +/- within 20 We hope your students enjoy these games. If you have questions or feedback, we’d love to hear from you. We can be reached at gardnerdevelopment@gmail.com.***Also available***-Comparing Numbers ~ Greater Than, Less Than, or Equal-Comparing Decimals ~ Greater Than, Less Than, or Equal-True or False Math Equations-Reading Comprehension Passages with Multiple Choice Questions ~ Guided Reading Level C-Reading Comprehension Passages with Multiple Choice Questions ~ Guided Reading Level D-Spanish Reading Comprehension Level 3