 # Finding Factors

8-10 yrs old

Math & Economics

Students will use a 100 chart on paper as a map to build rectangles that show the factors for each number between 1 and 100. Submitted By: Minecraft Education

February 10, 2020

#### Skills

• Creativity
• Critical Thinking

### External References

Associated Engage NY module and lesson.

### Learning Objectives

• CCSS.MATH.CONTENT.4.OA.B.4 Find all factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1-100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1-100 is prime or composite.

### Guiding Ideas

1) What is a factor?

2) How can numbers be broken down into smaller numbers?

3) Are there patterns between numbers with common factors?

Watch this video to see how to run this part of the lesson.

### Student Activities

Map out the chart on paper. Students will fill out three 100 charts that show factor patterns.

Chart 1 will show 2,4,8,10

Chart 2 will show 3,6,9,12

Chart 3 will show 5,7,11

Build the 100s Chart in Minecraft

Students will get into groups of three and enter the groups world, so that each group will be in their own world. Then they will work together to build rectangles that show the factors for each number.

Last they will label the factors on the slate.

Each student in the group is responsible for 1 out of the three 100 charts that were made on paper.

Each group is responsible for peer review of their teammates factor rectangles.

### Performance Expectations

1) The student was able to identify what numbers are prime and what numbers are composite.

2) The student was able to explain the difference between prime and composite numbers.

3) The student was able to show numbers with matching factors on the 100 chart.

4) The student was able to explain the patterns made by matching numbers on a number chart.

5) The student was able to complete the map with rectangles showing all the factors of whole numbers between 1 and 100.

#### Skills

• Creativity
• Critical Thinking