Summary
This is a tool to help students achieve a concrete understanding on how to round numbers.
Print Settings
Printer Brand:
FlashForge
Printer:
Finder
Rafts:
Yes
Supports:
Doesn’t Matter
Resolution:
Default
Infill:
Default
Notes:
I used a raft to help with the curling issues that I had been having.
Standards
CCSS
Overview and Background
Overview
Students will learn how to round a number.
Lesson Plan and Activity
Lesson Plan
Teacher will show students how to round a number, such as 12 on chart paper. Students will copy the anchor chart in their Student Journals.
Step 1:
Teacher will show students to find their number and underline it. If rounding to the tens place, that would be the 1.
Step 2:
Teacher will show students to “look next door” to the right, which will show the underlined number what to either round up or round down. The number in the example is 2.
Step 3:
Teacher will show students that if the number on the right is 4 or less to “let it rest” and keep the underlined number the same.
Step 4:
Teacher will show students that if the number is 5 or greater, to add 1 more to the underlined number.
Step 5:
Teacher will make sure students understand that all numbers after the underlined number will become a Zero, and that numbers before the underline will not change.
Students will take a look at the “Rounding Hill”, which will show the concrete example of rounding. Students will imagine a toy car stopping on the numbers. If the car stops on or before the 4, the toy car will be pulled by gravity back down to the 0, and will let the underlined number rest. If the toy car stops on or after the 5, gravity will pull the car down to the right side, signifying that they will add 1 more to the underlined number.
Anchor Chart
Materials Needed
Materials Needed
Student Journals, Pencils, Chart Paper, Markers, Rounding Manipulatives.
Skills Learned
Rounding
Number Sense
Math
Duration of Lesson
15-30 Minutes
Preparation
Preparation
Gather materials, print out several Rounding Manipulatives.
