What do you notice about 2023?
What is a Harshad number?
Does 2023 meet the criteria?
Big deal? Rare? Often?
Is 2023 a special number?
Tag: 4.OA
The Algebra of Magic Squares
Students examine Magic Squares for how they could help with math computation practice and having fun.
Whole lot of cookies
Jennifer Fairbanks from Hopkinton, MA sent us this picture of the cookies that she baked in 4 hours using 13 eggs and 5 cups of sugar. Do you see some math here?
What time should I wake up?
Surprise Mother’s Day breakfast in bed! I think she would like orange juice, scrambled eggs, biscuits, and hot coffee. I’ll add some flowers from outside and fruit to make it look fancy. Of course I want the hot food to all be hot when I serve her. When should I wake up in the morning to do all of this?
April Fool’s Day fun
Try one of these 4 activities on April Fools Day. Where did that extra dollar go? Mystical Mathematical Mind Reader; perplexing missing square in the triangle; and Robert Kaplinsky’s foil prank.
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? When might a similar day occur?
What’s interesting about this number?
What is interesting about the number, 12 22 21 … and why did we put it on YummyMath today?
Tree for Springtime
Here in the Northeast, flowers are blooming and trees are leafing out. We thought the creation of a tree that grows before your eyes might be akin to what is going on all around us. What do you see that…
Will our U.S. flag change yet again?
How many stripes are in our present flag pictured above? (The bottom right flag that has been in use since 1960.) How many stars? What do the numbers of stars and stripes represent? U.S. Congress is again considering whether to…
Inauguration Date
The date of the Presidential Inauguration this year can be written in an interesting way. What do you notice? What do you wonder? Do you think that this happens often in a year?
Ravensburger huge puzzle
Students surmise what the difficulty of a jig saw puzzle entails and use rate calculations to estimate finishing times. They try to confirm whether doubling the number of pieces really increases puzzle completion time by a multiple of four.
USPS needs help!
Students learn how the Postal Service is funded and try to decide how the USPS could earn more or spend less in their operation. They finally get to think about whether the post office should be a government run service or a self-sustaining business.
Ramen noodle heist
In 2018, the trailer of a truck filled with Ramen noodles was stolen from a parking lot in Georgia. The trailer contents were valued at $98,000. What do you wonder about this? Is this even possible?
Could $98,000 worth of Ramen even fit in a tractor trailer?
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 use Zoom screens of fans. The NBA creates virtual fans. Actual viewers…
Pascal coloring and modular math
Clock math, 1,2,3,4,5,6,7,8,9,10,11,12,1,2,3,4,5,6,7… is modular math. Let your students learn about the usefulness of modular math as they color and explore Pascal’s Triangle. Very pretty math!