Movie Tickets

Dear Dr. Data,

My two brothers and I want to go see a movie, the tickets are $5.75 per person an we also want to purchase candy for $2.25 and a drink for $3.50. How much money will we have left out of a $50 dollar bill? How much would we have left if we went to the evening show which is $2.50 more per ticket?

Prosperity student,
We added the three tickets and we got $17.25. Then we added the candy up and got $6.75. Then we added up the drinks and $10.50. Next we added all of it up and got $34.50, finally we subtracted that amount from $50. Our answer is $15.50. If you would go to the evening show, you would send another $7.50. If you subtract that from $15.50 you will have $8 left.

Dear Dr. Data,

My two brothers and I want to go see a movie, the tickets are $5.75 per person an we also want to purchase candy for $2.25 and a drink for $3.50. How much money will we have left out of a $50 dollar bill? How much would we have left if we went to the evening show which is $2.50 more per ticket?

Salsa question

Anonymous said...

We packed 72 containers with tomato mix. Each salsa kit requires 2 containers of tomato mix. How many kits can we make?

If each kit sells for $4.00, how much money will we bring in with this batch of salsa?

The cost to grow each kit is $2.75. What profit will we make on our salsa?

Please Leave Dr. Data a Math question

We are starting a new year at the Data Center, and Dr. Data is ready to answer any math questions you may have. Please leave us a question in the comment box.

Thank you,
Dr. Data

Survey

Dr. Data is collection a survey on how schools communicate with their community. Please take our survey.

Thank you,
Dr. Data

How do you connect your classroom to the community?

A. By skyping

B. By having a school business partnership

C. By taking students to visit places in the commuity.

or View Results

Create your own poll at Flisti.com

Ask Dr. Data A Question

Dr. Data needs more work, please ask him a question by making a comment in the comment section of this post.

Dear Mrs. Baxtor's class,

We would like to recommend Google Forms for your survey creation and data collection. This is an easy way to post questions and then give your community members a URL where they can go to answer them! Here are some step-by-step instructions: http://docs.google.com/support/bin/answer.py?hl=en&answer=87809 for creating a form/survey. Also, here is a sample form that we created: http://spreadsheets.google.com/viewform?formkey=dGxGamxCZjkyU3FXT19GVFJtU2FuRnc6MQ The answers come in on an Excel spreadsheet, here is what our data looks like from teachers in our school who took our sample survey: http://spreadsheets.google.com/ccc?key=0AsObDbgsk5DidGxGamxCZjkyU3FXT19GVFJtU2FuRnc&hl=en#gid=0 You can use Google Forms to quickly analyze the data with their graphs OR you can use another fun site called Create-a-Graph http://nces.ed.gov/nceskids/createAgraph/default.aspx to make some fancier graphs. Like the sample above that we created using our data:



Your Friend,
Dr. Data

Data Collection

Dear Dr. Data,

My class is planning our annual Make a Difference project and we would like to gather information from our community regarding some of their environmentally friendly practices. We were curious if you had some recommendations for the best way to gather the data and then analyze it?

Mrs. Baxtor
Lawrence, Kansas

Parts of a Circle

Ask Dr. Data A Question

Dr. Data needs more work, please ask him a question by making a comment in the comment section of this post.

Sincerely,
Dr. Data

Metric System

Earlier Cynde shared with the data team that her class was working on the metric system. We created a video on that subject. We hope it helps you class, Cynde.

Sincerely,
Dr. Data

Ask Dr. Data A Question

Dr. Data needs more work, please ask him a question by making a comment in the comment section of this post.

Marble Problems

We have finally solved the marble problem. Here is our data lab answer:

Since there are 3/5 marbles that are red. You must first find out how many blue and green marbles there are.

3/5 + ___ + ___ = 5/5
so
5/5 - 3/5 = 2/5
so
__ + ___ = 2/5

by looking at the last problem you can see that each of the blue and green marbles must equal 1/5 each for the total to be 5/5

Red 3/5 3/5 = ?/15 5*3=15 so 3*3=9 3/5 = 9/15
Blue 1/5 1/5 = ?/15 5*3=15 so 1*3=3 1/5 = 3/15
Green 1/5 1/5 = ?/15 5*3=15 so 1*3=3 1/5 = 3/15
= 5/5

So drawing a blue and red marble is 9/15 + 3/15 = 12/15 reduced is 4/5

So there is a 4 out of 5 chance that a blue and red marble will be drawn.

Dr. Data

Math Facts

Christy said...

How can you use technology to teach math facts?

Christy, we found some great sites for practicing math facts. We gave you our opinion on them, and we hope you enjoy them.

Sincerely,
Dr. Data

matching game
http://quizhub.com/quiz/f-multiplication.cfm

multiplication rock videos on youtube (search for the others; it looks like most of them are there)
http://www.youtube.com/watch?v=cwkgNf69ihY&feature=related

kidport 4th grade
http://www.kidport.com/grade4/math/NumberSense/G4-M-NS-Mult12.htm

Funbrain:
http://www.funbrain.com/tictactoe/index.html

Kidport 3rd grade
http://www.ixl.com/math/grade/third/

kidport 6th grade (really good stuff)
http://www.ixl.com/math/grade/sixth/

Math Trainer: 5 minute time test just press go
http://www.mathsisfun.com/numbers/math-trainer-multiply.html

johnnies math-really, really good
http://jmathpage.com/JIMSMultiplicationpage.html

Ask Dr. Data A Question

Dr. Data needs more work, please ask him a question by making a comment in the comment section of this post.

Thank you.

Baseball problem

Dr. Data got the above question several weeks ago. This one took us awhile to figure out, but we did it. Thanks for your post and challenging us.

Types of Triangles

Mrs. Altenburg said...

Could you explain the different types of triangles based on the number of sides and the types of angles.

Yes, Mrs. Altenbury,

We can answer that question for you. There are six different types of triangles. There is a right triangle, obtuse triangle, and acute triangle. They are different because of their angles. The right triangle has a 90 degree angle. The obtuse triangle is different because one angle is greater than 90 degrees. The acute triangle is smaller than 90 degrees and all the angles are smaller than 90 degrees. The other three triangles are Scalene, Isosceles and Equilateral. The Scalene triangle has no congruent sides. The equilateral triangle has all congruent sides, and the Isosceles triangle has two equal sides.

Working With Graphs

Cindy ask this question:

Hey Dr. Data,

My students have been working on coordinate graphs and converting in the metric system. Do you know of any good links I could tag for my students? Thank you for your help.

Well, Cindy,

We found some good links. One of our favorites is at http://jmathpage.com/JIMSGeometrypage.html scroll down to Cartesian Grids. By the way Johnnies Math page happens to be one of our favorite websites.

Your Friend,
Dr. Data

Esitmating

Anonymous ask Dr. Data the following question.

Dear Dr. Data,
Do you have any tricks for helping us estimate objects inside of a 3-dimensional object (for instance - how many balls are inside of the jar)?

Dear Anonymous,

Here is your answer: Let's say you want to estimate the number of gumballs in a jar. First, count the gumballs on the top layer of the jar. Then, count the number of gumball going up and down the length of the jar. Finally, multiple the top layer by the length of the gumballs. You have an estimate of how many gumballs are in the jar.

We hope the next time you have to make an estimate you get close!

Yours truly,
Dr. Data

Ask Dr. Data A Question

Dr. Data needs more work, please ask him a question by making a comment in the comment section of this post.

Math Links

Hey Dr. Data,
My students have been working on coordinate graphs and converting in the metric system. Do you know of any good links I could tag for my students? Thank you for your help - Ms. Norris in Manhattan!

Well, Mrs. Norris we found this great Wiki that two teachers made for their classes. You will find many links and resources here.

http://metricssixth.wikispaces.com/Flipcharts

Cindy said...

Hi again Dr. Data,
I thought of another question that I must ask you!! What ideas do you have for learning about probability? We are working on it and the kids want something fun to use for practice! Thank you for your help! Ms. Norris in Manhattan - Go Wildcats!

We hope your students like this link. If they explore this website further, they will find more activities for probability. http://www.mathplayground.com/JKA_Archive03.html


http://www.sciencenetlinks.com/interactives/marble/marblemania.html

Sincerely,
Dr. Data

Different Types of Triangles

Mrs. Altenburg said...

Could you explain the different types of triangles based on the number of sides and the types of angles.

Sure we can Mrs. Altenburg!

Ask Dr. Data A Question

Dr. Data needs more work, please ask him a question by making a comment in the comment section of this post.

Real World Geometry

We found some examples of real world Geometry. We hope this helps you to spot Geometry in the world around you.

Geometry In the Real World

Dr. Data,

Where can I find examples of transformational geometry (e.g. flips, slides, reflections) in the real world?

Dear Anonymous,

We found these real would example of geometry. We hope that you can find some of your own after looking at our keynote.

Notice

Dear Readers,

I have learned that some of you are having a little difficulty with our comment section of the blog. We may have a broken link in our blog chain. Sometimes readers have to click on the word "post" twice after making a comment in order for the comment to go through. If you happen to get an error message when trying to leave us a question in the comment box, please try clicking "post" a second time. That usually takes care of the problem. Sorry for the technical difficulties.

Dr. Data

Fact Families

Dear Dr. Data,

My class was wondering is there a limit to how many numbers can be in a fact family?

Dear 4th graders,

Look at the picture above (you can enlarge it by clicking on it; hopefully, it will answer your question.

Multiplying Numbers

Dr. Doctor Data,

Do you have any tricks for working two digit multiplication problems.


Dear 4th graders,

Yes, we do. It is called Lattice Multiplication. We created a short video to show you how.

Time

Dear Dr. Data,

We are working on elapsed time. Can you help us to learn that?


Dear 4th graders,

Sure. We have solved the following problem using tally marks. That is only one way to solve problems with elapsed time.

Time