Common Core standard

Activities for 3.OA

Real-world activities aligned to this standard.

Cookie Calculations
Cookie Calculations

In this activity, students will step into the kitchen to explore the math behind baking! πŸͺ They’ll estimate costs, calculate how many cookies can be made with a...

Algebra Number Sense Grades 3–5
Will the Barbie movie out-perform Avatar at the box office?
Will the Barbie movie out-perform Avatar at the box office?

The Barbie Movie is still doing well in the theaters. It has only been 6 1/2 weeks since its debut. Do you think that it can out-earn Avatar?...

Algebra Number Sense Grades 3–HS
Whole lot of cookies
Whole lot of cookies

This activity has been updated -- See the updated activity HERE

Algebra Number Sense Grades 3–5
Gauss and our star of stars
Gauss and our star of stars

How many stars are in this image and how did you count them? For Adventurer members we have a teaching suggestions and our solution sheet.

Number Sense Geometry Grades 3–7
What time should I wake up?
What time should I wake up?

I'm going to surprise my mom with breakfast in bed for Mother's Day. She wakes up pretty early. When do I have to wake up to pull this...

Number Sense Math and Food Grades 3–6
February 22, 2022
February 22, 2022

Why do you suppose we are posting this date as a topic for YummyMath? What do you think is so special about this date? Does this happen often?...

Algebra Number Sense Grades 3–6
Will our U.S. flag change yet again?
Will our U.S. flag change yet again?

How many stripes are in our present flag? (The bottom right flag that has been in use since 1960; See the PowerPoint) How many stars? What do the...

Algebra Geometry Grades 3–6
Do you want to be an NBA virtual fan?
Do you want to be an NBA virtual fan?

For health concerns, professional sports now have no actual live fans. To help generate the excitement and semblance of fans, some teams use cardboard cutouts of people. Some...

Number Sense Geometry Grades 3–6
Pascal coloring and modular math
Pascal coloring and modular math

In this activity students have the opportunity to color as they investigate Pascal's triangle and the many useful patterns that it shows. The triangle is explored for patterns,...

Number Sense Geometry Grades 3–HS
Is my son going to win again?
Is my son going to win again?

Brian son's pretty young but is he still going to whoop his dad? They were playing Monopoly Junior. Can you decide who will win? In this activity use...

Algebra Number Sense Grades 2–5
How many cars are there?
How many cars are there?

Brian came home from work to find that his son had his toy cars organized in a tight parking lot on our front porch. ? Below is a...

Number Sense Geometry Grades 3–5
Pick-a-brick wall at the Lego store
Pick-a-brick wall at the Lego store

There are walls at the Lego stores that are filled with individual Lego parts. You can fill a bucket and pick out exactly what you need. Use this...

Number Sense Geometry Grades 3–6