Mazie’s Amazing Marshmellows (Lesson 1 of 2)

https://docs.google.com/presentation/d/1rk9DpkqcVgkXY92WjSHVCJG057TC2bGwh_xzMTgbVYY/edit?usp=sharing

Launch/Hook:

Go through the slides above

Explain that students will be getting 24 counters (or 24 somethings) to represent one cut up slab of marshmallow.

 

Demonstrate on the 24 pack one how the 24ths of the slab would be added in one by one to each slot in the 24 pack box in the slides. 

 

Note that the denominator for slab will be 24 because it has been cut into 24 pieces, and the 24 pack will be 24, because there are 24 slots.

The other smaller boxes will have smaller denominators, because a *complete* pack of 3 has 3/3 pieces in it.

 

Students should be asked regularly what the denominator of each box is, and during the task, asked what the current numerator is as the teacher roams the room mid task.

You do:

Students get slides 7 and 8 to use as templates for boxes.

 

Share answers at the end. Can we come up with a complete list?

 

Enabling

Students to just find out how many boxes of 3, how many boxes of 4,

How many boxes of 6, 

How many boxes of 12 can be filled from one slab as separate orders..

Extending

What is the most profitable way to sell two slabs? (To receive slide 3 as well, or to be on the floor with it displayed on the board)

What fraction of a slab is each full box?