Growth Factors

This short video describes where a growth factor comes from and how to use it for a percent increase.

Sugar Packets - Dan Meyer Three Act Task

The question is simple: How many sugar packets are in a soda bottle? The lesson hooks students immediately with the initial video clip of a man sitting in a restaurant downing packets of sugar one-after-another! The mathematics involved is proportional reasoning.

How Big or How Little?

This activity is designed to have students think about what it means to “keep it in proportion” – a very common phrase, but what does it mean?

Now THAT'S Some Gas Mileage!

This activity involves working with percentages and is connected with the ACCR Standards at the sixth and seventh grade levels.

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.

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? 

Sochi Olympics - Junior High Math Contest

This is the 2013 Chandler-Gilbert Community College Junior High Math Contest Team Project. You may use all or just parts of it as it contains lots of different math topics including: The idea of AVERAGE The idea of AVERAGE SPEED and GRAPHS of LINEAR FUNCTIONS The idea of CREATING and INTERPRETING BOX and WHISKER PLOTS  The idea of SLOPE The idea of ANGLE The idea of PERCENT Look at the project and decide what parts your students are ready to tackle...and HAVE FUN!

Sunsplash

This is a series of activities from the 2007 CGCC Excellence in Math Junior High Contest Team Project.  You can pick and choose which parts of the project you want to use or do them all! Volume and converting of units Circumference and average speed Understanding average speed Readiing and interpreting line graphs Volume of a cylinder and rates

Biking to Bernie's

Nana's Lemonade - Dan Meyer Three Act Task

In a brief video, students are confronted with the situation of a person squeezing a lemon slice into a small cup of water. Then a "big gulp" cup is placed next to the smaller, lemon filled cup. By asking the question, "How many lemon wedges do you need to add for the same lemony taste?" students will begin to experiment and mathematically determine the answer.

What is my portion of the bill?

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.

Sharing Pencils

Sarah and Michelle are working on a class project using colored pencils. Given some information about the number of pencils that Sarah and Michelle had when they started, and how some sharing of pencils has taken place, students must employ proportional reasoning skills to determine how many colored pencils the girls now possess.

Here Fishy, Fishy!

Yolanda and Zachary each have some fish. Zachary gives Yolanda some of his fish, and now he has twice as many fish as she does. Students must utilize given information and apply proportional reasoning skills in order to figure out how many fish Zach gave Yolanda.

How Many Houses?

Carpenters and apprentices are busy building houses... Students are asked to answer four questions regarding the relationships between the number of workers and how many houses can be built during a specific number of days.

How Many Chickens?

Farmer Frank raises chickens and pigs. Students are asked to use specific given information to determine how many of Farmer Frank's animals are chickens. This problem will require students to persevere as they apply prior knowledge of fractions, ratios, and percents to algebra concepts such as solving a system of equations.

Broomsticks - Multiplicative Reasoning

This is the broomsticks activity created by Ted Coe.

Is a Super Ball REALLY Super?

Is a Super Ball REALLY "super?"  This activity allows students to collect data and to make an argument regarding this quetions. See the PowerPoint for details about the activity... Note: It is best to gain access to an authentic, Wham-O Super Ball made with Zectron! https://www.amazon.com/orginal-super-ball-wtih-zectron/dp/B0001ZN49I/ref=sr_1_2?ie=UTF8&qid=1513808409&sr=8-2&keywords=whamo+super+ball

Tesla Roadster Loan

Tesla Roadster Trip

Ratios & Proportions Unit