# Comparing the Weather

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## Objective

SWBAT create and solve comparison number stories based on reading of a weather graph for Maine and Florida

#### Big Idea

In order to meet Common Core standards students need to be able to interpret data to solve problems. This lesson provides practice in this area.

## Warm Ups

15 minutes

Because today students will be using both addition and subtraction to solve a series of comparison problems, the warm up today will be a review of subtraction.

I ask students to take out their math journals and solve the 3 problems I write on the board. I write 38 - 12=,   17 - 9 = , 25 - 14 = . I give students a few minutes to solve the problems. Then I ask for volunteers to come up one at a time and show us their solutions. I ask students to explain how they solved the problem as well as give the answer.

I ask students to solve a few partners of 100 subtraction problems. I ask students to write the responses in their journals.

I say 100 - 50, I pause for students to write the response and then I ask for the answer, I repeat this with the next two problems.,  100 - 80 =,  100 - 40 =.

I tell students that we have been reviewing subtraction because today they may need to use subtraction to solve some problems about the weather.

I ask students to come to the rug for the next part of the lesson.

## Teaching the Lesson

25 minutes

I begin today by reading the students a short book about weather. The book:  "Sunshine Makes the Seasons," by Franklyn M. Branley  tells about how the weather is not the same everywhere at once (especially the beginning and ending of the book).

I ask students  how many have ever traveled to somewhere by plane and found that the weather was different when they got there? I tell them that in our country Florida is about 24 hours of driving from Maine. I ask how many days that is? I ask students if they can find Maine and Florida on the classroom map. I tell them that if they got in a plane they could be there in 3 hours, but if they drove in a car it would take until tomorrow to get there, driving all night.

Now I ask them if they have ever traveled to Florida in the winter? Do they remember what the weather was like when they got there? (warmer than Maine, summery, etc.).  I tell them that I gathered some temperatures for the past week from Maine and from Florida. I found the high temperature for each day and the low temperature for each day and today we are going to compare them.

I post the chart for everyone to look at. I point out the column headings, and how to find the high and low temperatures for each place for each day. Do the temperatures look the same? What is different about them? I let students make comments about what they notice.

When students have solved the problem we compare answers and solutions.

We do the second problem together in a similar fashion.

I then explain to students how they will finish the paper independently. I have a challenge page for those that finish early.

## Closing

10 minutes

When students have finished the paper and are mostly working on the challenge page, I bring the group back together. I ask students to look at their papers. I tell them we will share answers and solutions to the problems on the page and then I will ask for volunteers to share a couple of their problems for the rest of the class to solve.

I know that we will only be able to share 1 or 2 of the student problems, but I can save the other problems for warm ups for tomorrow.