math detectives n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Math Detectives PowerPoint Presentation
Download Presentation
Math Detectives

Loading in 2 Seconds...

play fullscreen
1 / 15

Math Detectives - PowerPoint PPT Presentation


  • 79 Views
  • Uploaded on

Math Detectives. Starring: Fourth Grade Students The Suspects: The Notorious Word Problems. The crime is. The “crimes” we will be solving are math crimes. We will be looking at word problems!. How do we solve the crime?. Read the entire word problem.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Math Detectives' - sidone


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
math detectives
Math Detectives
  • Starring:
  • Fourth Grade Students
  • The Suspects:
  • The Notorious Word Problems
the crime is
The crime is...
  • The “crimes” we will be solving are math crimes.
  • We will be looking at word problems!
how do we solve the crime
How do we solve the crime?
  • Read the entire word problem.
  • First we must figure out what we are looking for. What is the word problem asking us?
  • Write a sentence to yourself.
steps to solving word problems
Steps to Solving Word Problems
  • UNDERSTAND
    • Restate what the question is asking you. Use the clues to help you!
  • PLAN
    • Make a plan on how you will solve the problem. For example, will you add, subtract, multiply, or divide.
  • SOLVE
    • Use your plan and the information (clues) from the problem to answer the question.
  • EXPLAIN
    • How did you solve the problem? Use math detective words to say what you did.
the crime
The Crime...
  • At a recent park clean-up, Jack picked up 30 pieces of trash. Emily picked up 25 and Annie picked up the most of all, 40! How many pieces of trash did the girls pick up all together?
understand the problem
Understand the problem

At a recent park clean-up, Jack picked up 30 pieces of trash. Emily picked up 25 and Annie picked up the most of all, 40! How many pieces of trash did the girls pick up all together?

  • What are we trying to solve?
  • What are our clues?

Hint: Read the problem carefully!

  • How much trash did the GIRLS pick up?
  • Emily picked up 25 pieces of trash
  • Annie picked up 40 pieces of trash

Sometimes, word problems give you extra information!

slide7
Plan
  • How can we solve this problem? How can we use the clues we have to find the answer?
    • We can add the amount of trash Emily picked up to the amount of trash Annie picked up to find out how much trash the girls picked up.
    • We don’t need to add the amount of trash Jack picked up because Jack is not a girl.
solve
Solve
  • Use your plan to solve the problem!

25 + 40 =

25 + 40= 65 pieces of

trash picked up

explain
Explain

You have your answer. As a detective you must explain how you got it!

Use Math Detective words to explain (using sentences) what you did to find your answer.

Use the Detective Word list.

math detective words
Math detective words

Start with:

I added I used objects I guessed and checked

I subtracted I drew a picture I used logical reasoning

I multiplied I looked for a pattern I made an organized list

I divided I made a table I solved a simpler problem

I worked backwards

Continue with:

to find to see to figure out because

to get to show to determine since

End with:

therefore my answer is... so my answer is

our explanation
Our Explanation
  • I added the trash that Emily and Annie both picked up to find the sum. The sum is the amount of trash that both girls picked up. So my answer is 65 pieces of trash.
recap
REcap
  • When we solve math crimes we NEED to use four steps.
      • Understand
      • Plan
      • Solve
      • Explain
  • Always explain your work using math detective words!
problem 1
Problem #1
  • Abby traveled to a wildlife park 55 miles from her home. She was excited because she saw so many different animals. The park had 6 giraffes, 4 lions, 8 ostriches, and 3 gigantic snakes. How many animals did Abby see all together?

Understand

Plan

Solve

Explain

problem 2
Problem # 2
  • Justin was getting ready to watch the Super Bowl. He saved $35.00 for a Steeler’s jersey (#7). His mom gave him $23.00 to buy a Steeler’s hat and his brother sent him $7.00 for a Terrible Towel. How much money did Justin have to buy Steeler fan items?

Understand

Plan

Solve

Explain

steps to solving word problems1
Steps to Solving Word Problems
  • UNDERSTAND
    • Restate what the question is asking you. Use the clues to help you!
  • PLAN
    • Make a plan on how you will solve the problem. For example, will you add, subtract, multiply, or divide.
  • SOLVE
    • Use your plan and the information (clues) from the problem to answer the question.
  • EXPLAIN
    • How did you solve the problem? Use math detective words to say what you did.