During the first 9-weeks and part of the second 9-weeks of this school year, we will be working on extending our knowledge of math skills gained during Kindergarten for addition and subtraction within 20. We will explore different ways to solve problems with the use of concrete manipulatives and pictorial representations to solve a problem, eventually becoming fluent and flexible with mental math as a result of these experiences. We will be working on answering the Unit Essential Question: "How do I use properties to solve addition and subtraction problems?"
At the end of this unit, your child will be able to use objects, drawings, and equations with a symbol to solve word problems. They will gain the skills to solve addition and subtraction word problems within 20 and determine if a problem needs you to add or subtract. They will be proficient in comparing numbers using the vocabulary “how many more and how many less/fewer”. Your child will solve word problems with up to 3 whole numbers that equal 20 or less and verbally explain a strategy selected to solve a problem.
This unit will cover the essential Florida Common Core State Standards listed below:
1.OA.1.1: 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
1.OA.1.2: Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.
1.OA.3.5: Relate counting to addition and subtraction
1.OA.3.6: Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten; decomposing a number leading to a ten; using the relationship between addition and subtraction; and creating equivalent but easier or known sums.