Grade 1 - Algebraic Reasoning Unit
The Algebraic Reasoning Unit involves understanding that the unknown can be any one of the three or four terms in an equation. Questions to answer may include:
- If I know the starting number and the change, how can I find the result? Such as: 2 + 4 =
- IfIf I know the starting number and the result, how can I find the change? Such as: 7 = 3 +
- IfIf I know the change and the result, how can I find the starting number?
Such as: - 3 = 5
Math Concepts and Skills:
The student uses properties of operations to develop strategies for solving addition and subtraction problems.
The student:
- solves word problems involving joining, separating, and comparing sets within 20 when the unknown may be any one of the terms in the problem.
- finds the unknown whole number in an addition or subtraction equation when the unknown may be any one of the three or four terms in the equation.
Summative Assessment Task
Students determine how many blue M&M's Alex has if he has the same total amount of M&M's as Joe.
Instructional Tasks/Formative Assessments
Given a total of eight hats, students determine how many hats are pink if Camila has four purple hats.
Students determine the number of flowers given to Dad, if there are two flowers left in the vase.
Students determine how many fewer leaves Caleb collects than Ashley.
Students determine how many pennies are in Sam's fourth pocket so that he can buy a pirate pencil that costs 20 pennies.
Given a total number of seashells, students determine how many seashells Sofia had to start with after Claire brings her six more seashells.