Curated OER
Earth: the Apple of Our Eye
Young scholars dissect an apple to model the percentage of land on Earth that can be used as a food-producing resource.  They use fractions to determine the habitable and agriculture area of the apple.
Curated OER
Proportions
Students perform mathematical operations to create proportional measurements, after listening to the David Schwartz book, If You Hopped Like a Frog.
Virginia Department of Education 
Middle School Mathematics Vocabulary Word Wall Cards
Having a good working knowledge of math vocabulary is so important for learners as they progress through different levels of mathematical learning. Here is 125 pages worth of wonderfully constructed vocabulary and concept review cards....
Curated OER
Fraction Problem Solving Process
Help your charges solve a variety of fraction and skip counting problems using a problem solving process. As a class they work through a fraction problem step-by-step, and discuss a real-life connection to the problem. Students then play...
Alabama Learning Exchange
How Old is Your Money?
Elementary learners explore coin mint dates. First, they listen to the book Alexander Who Used to be Rich Last Sunday by Judith Viorst. They then sort a collection of coins according to their mint date and put them in order from oldest...
Noyce Foundation
Counters
For some, probability is a losing proposition. The assessment item requires an understanding of fraction operations, probability, and fair games. Pupils determine the fractional portions of an event. They continue to determine whether...
Mathematics Assessment Project
Optimizing Coverage: Security Cameras
Are you being watched? Class members determine where to place security cameras protecting a shop. They then evaluate their own and several provided solutions.
Curated OER
Goldfish Addition and Subtraction
Engage in a hands-on addition and subtraction activity that is a wonderful tie-in with ocean studies. As the teacher, you will make up equations using construction paper and goldfish crackers. 
Curated OER
Candy Machine
Using the concept of a candy vending machine, young mathematicians explore the sugar ratios found in different types of candy. Using the provided information, class members calculate and compare different ratios in...
Curated OER
Capture/Recapture
Middle schoolers use proportions to estimate the size of populations. They describe the data with using a graph or table of the estimate. Students use descriptive statistics to calculate mean, median, and mode. They also compare and...
Curated OER
Math and the Greek-Golden Proportions
Fourth graders study math and the golden mean. In this math meets Greek history lesson, 4th graders study ratios and proportions in relation to the Greeks. The use of clay is incorporated ino this lesson. 
Curated OER
Buggin' Out (Identifying and Adding Amounts of Money)
Students explore consumer math by participating in estimate exercises. In this currency lesson, students identify and define each piece of U.S. currency and their value to the monetary system. Students complete several money worksheets...
Mathematics TEKS Toolkit
Grade 6: Exploring c/d = pi
Introduce your math class to the perimeter of a circle. Teach them that pi describes the relationship between the circumference and the diameter. As a hands-on investigation, pairs or small groups use string to compare these two values...
Curated OER
Probability and Geometry
Students explore the ways Geometry can help solve probability problems.  Students describe platonic solids and practice calculating probability using an online resource.  They construct dice with various numbers of sides to demonstrate...
Curated OER
Who Wants to Carry a Million?
Learners, in groups, determine the volume of a box large enough to hold a million dollars. They calculate the dimensions of a bill and the volume of the money.
Curated OER
Science Unit Lesson Five
Sixth graders review how and which plants operate in terrariums. In groups, they follow instructions to make their own terrarium and place different types of plants in it. To end the activity, they review the steps in the water cycle and...
Curated OER
Signal Flags
Students examine the use of signal flags on vessels. They use measurements and symmetry to create their very own signal flag. Students work together and as individuals to solve problems and express their ideas.
Curated OER
How much is a movie worth?
Students discover how much a movie is worth. They use decimals and percentages greater than 100 to complete this activity.
Curated OER
The Home Stretch
Learners read the novel Stone Fox by John Reynold Gardiner. Using Lego RCX units, students build and program sleds to re-enact the "home stretch" of the National Dog Sled Race.
Curated OER
It's Great to Be More
Students compare whole and fractional numbers using <, >, or =, with manipulatives and drawings.
Curated OER
Better Than Average
Learners analyze how to calculate averages, and discuss the use of averages in baseball. They calculate averages and decimals to thousandths using the data on baseball cards.
Curated OER
Smoking: The Real Cost
Third graders discuss the adverse effects of smoking and predict the financial cost of a smoking habit. They collect data regarding the cost of a pack of cigarettes and average packs smoked a day. They create bar graphs displaying the...
Curated OER
Grade 2: Spinning Sums
Second graders collect data by spinning two spinners and creating sums, organize the data, and make conclusions from the data. Each students makes a spinner. They spin and record the number of the section each time. Students work in...