Addition and Subtraction Activities

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Addition and Subtraction Activities

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ADDITION AND SUBTRACTION ACTIVITIES

ECAM CONTINUUM STAGE	POSSIBLE ACTIVITIES
Stage A: These children are just beginning to understand the concepts of putting small collections together, or taking a small amount from a collection. They are not yet successful in finding sums or differences. Next Steps: Successfully put two small collections together and find the sum Find the difference after taking a small amount from a collection	Dot Card Addition Unifix Towers Part Whole Mats Five Squares Shake 5 and Spill Make 5 on the Five Frame Domino Addition
Stage B: These children can successfully put two small collections together and find the sum. They can also find the difference after taking a small amount from a collection. They need to fully model, and count from one by ones to find their answers. Next Steps: Begin to use ‘short-cuts’ to add two small collections, or to take a small amount from a collection (e.g.count on to find a sum, or count back, count down to, or count up from’ to find a difference)	Plus One Game (one die) What is One Less? One Less (1-6) Addition Word Problems Subtraction Word Problems

ECAM CONTINUUM STAGE	POSSIBLE ACTIVITIES
Stage C: These children are beginning to use short-cuts to add two small collections, or to take a small amount from a collection. They only need part of a model, and either count on to find a sum, or count back, count down to, or count up from to find a difference. Next Steps: Begin to use 'simpler' thinking strategies to add and subtract (adding one or zero, using doubles, turning around the addends, sums to ten, or adding ten).	Doubles Towers Facts of Five Sums of Five Facts of Ten Sums of Ten Make Ten Game Make 10 with Dot Cards My Ten Frame Riddle My Double Ten Frame Riddle Making Apple Ten Packs Make Ten on the Ten Frame Bunk Bed Problem Double-decker Bus Problem Towers of Ten Student Work: Towers of Ten Ten Frame Subtraction Number Sentence Match Turn Around Trains Turn Around Dominoes Domino Fact Families Addition Domino Train Ten More
Stage D: These children are able to add and subtract small amounts using 'simpler' thinking strategies (adding one or zero, using doubles, ‘turning around’ the addends, sums to ten, adding ten). They are able to mentally add and subtract small numbers without making a model. Next Steps: Use later thinking strategies (fact families, extending to larger numbers, near doubles, make to ten, adding nine).	Four in a Row with Near Doubles (Version 1) The Difference Game Eleven More Doubles Plus One Doubles Minus One Number Relationship Mat Magic Triangles Nine Plus Four in a Row with Near Doubles (Version 2) Four in a Row with Near Doubles (Version 3) Number Wheel Spin What Number is...? Addition Split
Stage E: These children are able to extend their thinking strategies to include larger numbers, and more difficult calculations with small numbers. They add and subtract mentally, using thinking strategies such as fact families, ‘near doubles’, build to ten, and adding nine.	2 Digit Addition Split 3 Digit Addition Split 2 Digit Subtraction Split 3 Digit Subtraction Split 3x3 Magic Square 4x4 Magic Square 5x5 Magic Square Addition Magic Square

*For more addition and subtraction activities see the Number Page for your grade level.

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