These subtraction word problems with unknowns in all positions are easily differentiated for kindergarten, 1st grade, 2nd grade, special needs, and gifted and talented students. You, as the teacher, can fill in the numbers in the problems to make the story problems at each students' level. The story problems are created to be easily relatable for students of this age. They have been created to align to the Common Core.
There is an additional page at the end that can be added to the back of each story problems to give students practice in explain their thinking and how they got their answer. There is also a small box for teacher's notes on the back. In this box teachers can quickly note the strategies students are using and which manipulatives they have used to solve the problem so that assessing and flexible grouping will be easier.
This sheets can be used as a station in math workshop. You could have each sheet covered with a plastic sheet cover and have the students solve the problems with a dry erase marker. They could also be used in a math journal, as homework, as an assessment, or the teacher can use them when working with guided groups.
I have also created a kindergarten, first grade and second grade rubric which can used to assess students' learning on a 5 point scale. The rubric includes the grade level standard and the five mathematical practices listed below.
Common Core Mathematical Standards addressed/assessed:
Operations and Algebraic Thinking
Kindergarten - Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.
First grade - Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
Second Grade - Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
Mathematical Practices addressed/assessed:
Make sense of problems and persevere in solving them.
Construct viable arguments and critique the reasoning of others.
Model with mathematics.
Use appropriate tools strategically.
Attend to precision.
Please let me know if you have ideas on how to improve my product. I hope that you enjoy using them in your classroom. I have also created a set of Subtraction Word Problems with unknowns in all positions.
Jennifer Keddie de Cojon