Lesson Plan

Common Core - Rounding

This app flow will introduce students to rounding
Ruth O.
Technology coordinator
Victory Elementary School
Portsmouth, United States
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My Subjects English Language Arts, Math, Science, Social Studies

Students will be able to:

  • Use place value understanding to round whole numbers to the nearest 10 or 100.
Grades 3
All Notes
Teacher Notes
Student Notes

1 Hook

Activity: Conversing

Start the class with a competition - Side A vs. Side B.  Explain that students will complete a math problem without paper or pencil and the first to solve their problem wins a point for their side.  Before introducing the activity, prepare math problems for each side and cover them.  Prepare rounded numbers for Side A and similar numbers (but not rounded) for Side B.  As the contest progresses, help the students to make observations about why Side A is winning. 

2 Direct Instruction

Free to try, Paid

Use the third grade "Rabbit Roundup" activity to introduce rounding to the nearest 10 and 100.

3 Guided Practice

Free to try, Paid

Use an online numberline tool and a prepared rounding worksheet with students to practice rounding as a class, or you can use the Education CIty "Rabbit Roundup" activity sheet with the numberline tool. Complete the first few as a class and then have the students round the remaining numbers with a partner.

4 Independent Practice

ST Math: K-6
Free to try, Paid

Take students to the computer lab where they will work on the Rounding Three Digit Numbers puzzles. Monitor students as they work, be on the lookout for screens framed in colors that indicate problems. 

5 Wrap-Up

In pairs, ask students to complete a video explaining one example of rounding to 10 and one example of rounding to 100. Ask them to answer the following questions in their video: How is rounding to the hundreds place similar to rounding to the tens place?  How is it different?  Do you find one easier than the other?  Explain why or why not.