Firefighter Fractions

Grade 1 Mathematics

Number, Operation and Quantitative reasoning KIDSTEACHERS

(1.2) Number, Operation and Quantitative reasoning. The student uses pairs of whole numbers to describe fractional parts of whole objects or sets of objects. –(B) uses appropriate language to describe part of a set such as three out of the eight crayons are red. Grade 1 Mathematics

Purpose This presentation is designed for first grade mathematics class. It is intended for the individual student to view after or during an initial lesson about the concept of fractions. Students will participate and interact with the presentation in order to reinforce the concept learned.

Fractions are made when we have more than one of something. What are fractions?

Fractions are made when we have more than one of something. What are fractions?

There are FOUR dogs. What are fractions?

We make fractions when we compare PART of the group with the WHOLE group. What are fractions?

THREE dogs are in the corner. What are fractions?

So, the way we say this as a fraction is: What are fractions? THREE out of FOUR dogs are in the corner

For example, if we have THREE fire trucks What are fractions?

For example, if we have THREE fire trucks, and you take ONE of them,

What are fractions? For example, if we have THREE fire trucks, and you take ONE of them, you now have ONE out of THREE fire trucks.

Thats all you need to know for now. Once again…. Take the number of objects that you have, and thats your FIRST number. I have TWO helmets.

Thats all you need to know for now. Once again… Take the number of objects total, and thats your SECOND number. There are FIVE helmets.

Thats all you need to know for now. Once again… The way we say this as a fraction is TWO out of FIVE helmets.

Thats all you need to know for now. Once again… The way we say this as a fraction is TWO out of FIVE helmets. -Or- 2 out of 5 helmets

Lets put this to some use! How would you like to come with me and help the fire department for a day? LETS GO!!!

JJ is out walking his dog, Spot. When he crosses the street (after looking BOTH ways of course), he notices something….. funny. UH OH.

Oh no! The empty house across the street is on fire!

Call and get the fire trucks coming, FAST!

Here they come!!!

Here comes the Fire Chief!!!

Here comes the Fire Chief! The Fire Chief says: Help me, JJ. I need your help keeping track of where my fire trucks and firefighters are at ALL times.

Here comes the Fire Chief! The Fire Chief says: Heres my first problem. Are you READY?

Problem #1 Ladder Trucks… how many? Chief Says: JJ, I have FIVE fire trucks out there right now. TWO of them have ladders on them.

Problem #1 Ladder Trucks… how many? Chief Says: Tell me, JJ, I need to know what fraction of my trucks are ladder trucks.

Problem #1 Lets work this one together. I have TWO ladder trucks. There are FIVE fire trucks.

Problem #1 Lets work this one together. Thats easy, Chief, TWO out of FIVE fire trucks are ladder trucks!

Problem #1 Lets work this one together. Thats easy, Chief, TWO out of FIVE fire trucks are ladder trucks!

Problem #2 Where are my firefighters? Chief Says: Good. Ok-- See that fire truck over there?

Problem #2 Where are my firefighters? Chief Says: That truck came with SIX people. Thats what I call a full truck. I see ONE person near the truck.

Problem #2 Where are my firefighters? Chief Says: Hes safe, but those guys over there are in danger if that house falls.

Problem #2 Where are my firefighters? Chief Says: This ones not as easy. Tell me what fraction of my firefighters are IN DANGER, JJ. I need to know.

Use this time to work the problem. SIX firefighters ONE is outside, pumping water What fraction of the firefighters in danger by the house? Have the answer? Lets see how you did…

We have SIX firefighters. If ONE is still by the truck, we have to subtract to find how many are by the house. Problem #2 Where are my firefighters?

6 – 1 = 5

That means there are FIVE firefighters by the house. There are SIX firefighters total. Problem #2 Where are my firefighters?

So, Chief, FIVE out of SIX firefighters are by that house.

Problem #3 Whos left? Chief Says: Look, JJ, we did it! The fire is out. And we even saved most of the house!

Problem #3 Whos left? Chief Says: I just have one more problem for you.

Problem #3 Whos left? Chief Says: Im sending everybody back in service except for that one truck over there. That means everyone gets to go but them.

Problem #3 Whos left? Chief Says: JJ, What fraction of my trucks are left?

Use this time to work the problem. We had FIVE fire trucks. All have left but ONE. What fraction of the fire trucks are still here? Have the answer? Lets see how you did…

Problem #3 Whos left? We have ONE fire truck left.

Problem #3 Whos left? We have ONE fire truck left. There were FIVE fire trucks altogether.

Problem #3 Whos left? So, Chief, ONE out of FIVE fire trucks are still here.

Good Job!! JJ, Im making you and Spot honorary firefighters for your hard work on this scene today!

Good Job!! I dont think I could have done it without you!

Aw, well, it was nothing, Chief… (should I tell him we learned all about fractions last week?) Nah…. Good Job!!

Credits AskERIC website – cs/Arithmetic/ATH0023.htmlhttp://askeric.org/Virtual/Lessons/Mathemati cs/Arithmetic/ATH0023.html The Cy-Fair Volunteer Fire Department Daves Firefighter Web Gallery – George Strait –Greatest Hits The Fireman

Credits Lesson PlanZ – Pennsylvania Firefighters Website – TEKS website –

That was the END. Where do you want to go? Content and TEKS All About Fractions Practice The Big Fire Problem 1 Problem 2 Problem 3 I want to do it again!I want to do it again!