Number Sense

Grade

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Heating with wood - What's a cord?

Algebra Number Sense Geometry Ratio and Proportion Any time math
Do you know what a cord of wood looks like? What size stack is that? What's a thrown stack? What's the dog's name that is standing in front of the wood? How long can I heat my house with that much fue...

Lego Fireman +

Number Sense Geometry Math and Science Math and Art Any time math
At the Toys R Us store, we saw an amazing LEGO creation.  He was a life-sized LEGO fireman with a walkie-talkie, an oxygen tank and even an oxygen...

Women's World Cup - How many matches are left?

Number Sense Geometry Sports Current events
The first round of Group play has finished and now the remaining teams start the second round of play. The teams have already played a lot of matches. How many? And, how many matches are left? ...

This shoe is huge!

Algebra Number Sense Ratio and Proportion Wow factor Any time math
Brian and his son were doing some shopping when he found this shoe.  Egad!  Could that be someone's real shoe? In this activity student use a shoe size chart, patterns or linear modelin...

Two 12s or one 18?

Number Sense Geometry Math and Food
A little more pizza fun before Pi day! Which should we order and why? Two 12-inch pizzas or one 18-inch pizza?  Which will give you more pizza? More crust? Which is the better deal?  ...

Square or Round - which pizza should I buy?

Algebra Number Sense Geometry Math and Food
Warm up for π day with this updated activity! Subway has great Flatizzas but Sbarro's pizzas are good too.     If that slice from Sbarro is from an 18-inch pizza cut into eight piece...

Winter Solstice 2023

Number Sense Geometry Math and Science Ratio and Proportion
It is really dark out now.  Why is that? Students appreciate how their latitude effects the darkness of their late afternoon location as they study the earth's tilt and the logic of daylight hour...

Do I have enough wrapping paper?

Algebra Number Sense Geometry Holidays and Annual Events 3-act tasks
 In this problem based activity students first guess and then try to calculate whether they will have enough paper to wrap this present without taping pieces of wrapping paper together.Consi...

How big of a crepe can you make?

Algebra Number Sense Geometry Math and Food Ratio and Proportion
At Costco you can buy this huge tub of nutella.  It contains nearly 7 pounds of chocolaty-hazelnut spread. We use nutella to make banana/nutella crepes.  How long will that tub last u...

Will one roll be enough?

Number Sense Geometry Holidays and Annual Events Ratio and Proportion
 Students can use the man or the basket as a reference as they try to approximate the size of these gifts and how much wrapping paper will actually be needed. Approximation, surface area, reasoni...
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