TEKS 3.5D: Solving for Unknowns in Equations
Solve for the Unknown in Multiplication
About this lesson
Learning Target: I can determine the unknown whole number in a multiplication equation.
Focuses On:
- Defining important vocabulary related to multiplication including factor, product, equation, and commutative property
- Determining the missing factor in multiplication facts and larger equations
- Identifying the unknown factor in word problems
Builds On:
2.6A:
Model, create, and describe contextual multiplication situations in which equivalent sets of concrete objects are joined.
2.6B:
Model, create, and describe contextual division situations in which a set of concrete objects is separated into equivalent sets.
Next Level:
4.4H:
Solve with fluency one and two step problems involving multiplication and division, including interpreting remainders.
Read More:
The lesson is designed to support student understanding of multiplication equations and how the factors work to create the product. Student are also challenged to identify the relationship between multiplication and division to assist in determining unknown factors.
The three instructional blocks in this lesson focus on finding the unknown factor in multiplication equations, finding the unknown factor in double digit multiplication equations and solving for the unknown in word problems.
In the first instructional block, students explore how to find the unknown part of a multiplication equation using different strategies such as: skip counting, using a known fact, repeated addition or drawing equal groups.
The second instructional block students use the same strategies that were introduced in the first instructional block to find the unknown value in larger equations with double-digit numbers.
The third instructional block focuses on having students draw on the strategies they learned to find the unknown in word problems
Supported expressions and multiple strategies are intentionally built into the lesson to scaffold student understanding.
Grade 3MathTEKS 3.5DSolve for the Unknown in Division
About this lesson
Learning Target: I can determine the unknown whole number in a division equation.
Focuses On:
- Defining important vocabulary related to division including dividend, divisor, quotient, and equal groups
- Determining the missing dividend, divisor, or quotient in division facts and larger equations
- Identifying the unknown value in division word problems
Builds On:
2.6A:
Model, create, and describe contextual multiplication situations in which equivalent sets of concrete objects are joined.
2.6B:
Model, create, and describe contextual division situations in which a set of concrete objects is separated into equivalent sets.
Next Level:
4.4H:
Solve with fluency one and two step problems involving multiplication and division, including interpreting remainders.
Read More:
The lesson is designed to support student understanding of division equations and how each part of the equation works together. Student are also challenged to identify the relationship of multiplication and division to assist in determining unknown values.
The three instructional blocks in this lesson focus on finding the unknown factor in division equations, finding the unknown factor in double-digit division equations and solving for the unknown in word problems.
In the first instructional block, students explore how to find the unknown part of a division equation using different strategies such as using division thinking and using a related multiplication fact.
The second instructional block students use the same strategies that were introduced in the first instructional block to find the unknown value in larger equations with double-digit numbers.
The third instructional block focuses on having students draw on the strategies they learned to find the unknown in word problems
Supported expressions and multiple strategies are intentionally built into the lesson to scaffold student understanding.
Grade 3MathTEKS 3.5D