Open Educational Resources

/ Contribute Content
Displaying 1 - 50 of 131 results
1 2 3 Next
Rating | Views Title Posted Date Contributor Common Core Standards Grade Levels Resource Type

2015 Excellence in Mathematics Contest


This is the Team Project from the 2015 Junior High Excellence in Mathematics Contest at Chandler-Gilbert Community College. It involves lots of open ended problems from many mathematical areas: Find the weight of a snowman (geometry, proportional reasoning) Find how long it takes ice to form on a lake (rate of change, awkward units) Questions about the amount of mining done in Northern Minnesota (proportional reasoning, conversions) You can use just one part or all parts depending on the audience and the purpose.

1/27/2015 Scott Adamson
6.RP.A.2 6.RP.A.3 6.RP.A.3b 7.RP.A.2 7.RP.A.2a 7.RP.A.3 7.G.A.1 7.G.B.6 8.G.C.9 MP.1 MP.2 MP.3 MP.4 MP.5 MP.6 MP.7 MP.8 6 7 8 Activity

25 billion apps - Dan Meyer Three Act Task


The question is simple: When should you start bombarding the App Store with purchases if you want to win a $10,000 App Store Gift card? The lesson hooks students immediately with the initial video clip of a “live” counter of current downloads showing the number approaching 25,000,000,000. The mathematics deals with modeling a linear relationship between two quantities

9/7/2014 Trey Cox
8.F.B.4 8.F.A.3 MP.1 MP.2 MP.3 MP.4 8 Video

A Bug's Life - Estimating Area of Irregular Polygons


This is a creative writing project that includes a rubric for scoring student's work. It works well as a team project. The focus of the project is on solving a contextual problems involving area of a two-dimensional object composed of triangles, quadrilaterals, and polygons.

9/5/2014 Trey Cox
7.G.B.6 6.G.A.1 MP.1 MP.3 MP.4 MP.5 MP.6 7 Activity

A Coin Conundrum!

Figure out how many nickels and how many quarters Jamie has if you also know the total value of the coins. Then, take the problem to a whole new level by mixing in several dimes. Now THIS is a real coin conundrum!

10/31/2014 Lynda Boepple
7.EE.B.4 8.EE.C.8c HSA-REI.C.6 MP.1 MP.2 MP.3 MP.4 MP.5 MP.6 MP.7 MP.8 7 8 HS Activity

A Motorcycle Transaction

Myles purchases two motorcycles without his mother's permission. She makes him sell them. You will determine if he made a profit or a loss in this buying and selling transaction. Concepts: percent to decimal conversion, finding the percent of a number, and calculating the percent of change.

10/20/2014 Lynda Boepple
6.RP.A.3c 7.RP.A.3 MP.1 MP.2 MP.3 MP.6 MP.7 6 7 Activity

A Pool Design Pattern


A pool desinger has lost his plans for some large, rectangular pools. He needs your help to sketch the next two pools in the pattern, and to develop a rule to determine how many tiles he'll need to create a visual model of the designs.

10/5/2015 Lynda Boepple
8.F.A.1 8.F.B.4 MP.3 MP.4 MP.5 MP.6 MP.7 MP.8 8 Activity

Adding Integers


This is a series of lessons focused on: Making Zero (Sea of Zeros idea) Adding integers using chips and a checking account analogy It contains three activities and homework: Part 1 - Making Zero Part 2 - Adding integers with the Chip Model Part 3 - Adding inetgers with the Checking Account Analogy Homework To see a related video, go to:

9/19/2014 Scott Adamson
6.NS.C.5 6.NS.C.6 6.NS.C.7 6.NS.C.6a 6.NS.C.6c 6.NS.C.7a 6.NS.C.7b 6.NS.C.7c 6.NS.C.7d 7.NS.A.1 7.NS.A.1a 7.NS.A.1b 7.NS.A.1c 7.NS.A.1d 7.NS.A.2 7.NS.A.2a 7.NS.A.2b 7.NS.A.2c 7.NS.A.2d 7.NS.A.3 MP.2 MP.4 MP.5 MP.6 MP.7 MP.8 6 7 8 Activity

AN algorithm for subtraction


A 2nd grade student shared an algorithm for subtraction that was learned at home. This provides a great opportunity to make sense of mathematics! With a focus on place value, the algorithm can be made sense of by our students.  The PDF Pencast simply explains the algorithm...share it in class and use it as a context to make sense of math, develop number sense, focus on place value. NOTE: Adobe Reader DC (or equivalent) is needed to view the "video" aspect of this pencast PDF.

3/13/2017 Scott Adamson
2.NBT.A.1 2.NBT.A.1a 2.NBT.A.1b 2.NBT.A.4 2.NBT.B.5 2.NBT.B.7 2.NBT.B.9 MP.1 MP.2 MP.3 MP.6 MP.7 1 2 3 Video

An AREA Riddle

Knowing the perimeter of a certain rectangle, see if you can figure out what the area of the rectangle might be. Then, discover what happens to the area when the perimeter of the rectangle doubles...

11/4/2014 Lynda Boepple
4.MD.A.3 6.G.A.1 7.G.A.1 7.G.B.6 7.RP.A.1 MP.1 MP.2 MP.3 MP.4 MP.5 MP.6 MP.7 MP.8 4 6 7 Activity

Area of a house


Goal: The goal of this activity is for students to find the area of a house floor plan. They will need to use their knowledge of rectangles to identify the missing side lengths to find the correct area. This also allows students to see how area is used in a real-life application.

4/20/2017 Ashley Nicoloff
7.G.B.6 6.G.A.1 MP.1 MP.2 MP.3 MP.4 MP.5 MP.6 MP.8 5 6 7 8 HS Activity

Average Athletics


One of the measures of central tendency is the mean/average. Many do not know much about the average other than it is calculated by "adding up all of the numbers and dividing by the number of numbers". This activity is designed to help students get a conceptual understanding of what an average is and not just how to calculate a numerical value.

9/4/2014 Trey Cox
6.SP.A.2 6.SP.A.3 6.SP.B.5c 6.SP.B.5d MP.2 MP.4 6 7 Activity

Biking to Bernie's

11/25/2014 Lynda Boepple
4.NF.B.3c 4.NF.B.3d 4.NF.B.4a 4.NF.B.4c 5.NF.A.1 5.NF.B.4a 5.NF.B.6 6.RP.A.3 6.EE.B.6 7.RP.A.1 MP.1 MP.3 MP.4 MP.5 MP.6 4 5 6 7 Activity

Broomsticks - Multiplicative Reasoning


This is the broomsticks activity created by Ted Coe.

6/15/2016 Scott Adamson
7.RP.A.3 4.OA.A.1 4.OA.A.2 6.RP.A.3c HSN-Q.A.3 HSN-Q.A.1 MP.1 MP.2 MP.3 MP.4 MP.5 MP.6 MP.7 MP.8 8 HS 7 4 5 6 Activity

Cal Clulus: In Pursuit of Justice!


This project involves a movie that was written by, directed by, and starring Dr. Scott Adamson and Dr. Trey Cox. The focus of the project is making sense out of average rate of change, instantaneous rate of change, and the Mean Value Theorem. Watch this clip first with your class before doing the activity: After doing the activity, view the 2nd part of the video at:

6/30/2015 Trey Cox
HSF-IF.A.2 HSF-IF.B.6 HSF-IF.C.7a MP.1 MP.2 MP.3 MP.4 MP.5 HS Video

California Adventures- Central Tendency and Variation


10/26/2016 Ashley Nicoloff
6.SP.B.5c 6.SP.A.3 6.SP.A.1 6.SP.B.5 6.SP.B.5a MP.1 MP.2 MP.3 MP.6 MP.8 6 7 Activity

Can We SWIM Yet?

The Johnson family is SO excited to go swimming in their new pool! Which of the three hoses should they use to fill it the most quickly? How long will it take to fill if they use all three of the hoses? 

11/7/2014 Lynda Boepple
5.NF.A.1 5.NF.A.2 6.RP.A.3 7.RP.A.1 MP.1 MP.2 MP.3 MP.4 MP.5 MP.6 MP.7 MP.8 5 6 7 Activity