Turn your students into little detectives by finding the missing addends! These common core aligned activities are a great addition for center activities and even includes posters for introducing the concepts and worksheets that can be used as either practice or quick assessments.
This pack includes:
*4 posters for introducing the topic
*Vocabulary foldable where your students can draw/write their examples of a variable, addend, and sum.
*6 cut and paste worksheets
*2 Different card games you can play as a matching game, hunting around the room to match the cards, or concentration.
*Detective activity (word problems) where students will solve the mystery of Detective Dan's missing dog by matching equations to the word problem, and matching the equation to the answers. They will record information on the recording sheet in order to solve the riddles about the name of Detective Dan's dog and where he disappeared to! The recording sheet also comes with an answer sheet.
Aligned with the Common Core Strategies:
1.OA.D.8 - Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.
2.OA.B.2 - Fluently add and subtract within 20 using mental strategies.