Math Lesson View

Lesson Purpose

To inform students that, in math, there are often many ways to get to the same end (via using different smaller shapes to create a larger composite)

Related Documents

Lesson Objectives

At the end of this lesson, students will be able to:

·         use sorting strategies as a means to count and solve addition, subtraction, and multiplication problems

Student Target

“I can count and calculate faster with sorting.”

CCR Focus Standards

Number and Ratios - Level A

• 1.OA.6

  Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
  

Number and Ratios - Level B

• 3.NBT.3

  Multiply one-digit whole numbers by multiples of 10 in the range 10–90 (e.g., 9 x 80, 5 x 60) using strategies based on place value and properties of operations.
  

Supporting Standards

• 1.OA.4

  Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.
  

• 2.NBT.2

  Count within 1000; skip-count by 5s, 10s, and 100s.
  

Standards for Mathematical Practice

KYAE Employability Standards

• E.6

  E.6 Identify and effectively use skills and materials needed for a particular task.

• E.8

  E.8 Interact with others in a professional manner.