Curated OER
The "Heart" of the Problem
Learners create an exercise and nutrition program. In this interdisciplinary instructional activity, students use calculations of exercises plus their corresponding effects on the body and nutritional values of food to derive a health...
Curated OER
Making Change
Second graders explore how to incorporate a new type of technology, the cash register and/or a calculator, as a motivational tool for solving real life problems. They practice estimating money and counting back change from $20.00.
Curated OER
Hollywood's Top Ten
Students gather data on top 10 highest grossing movies, and make a bar graph and a pictogram.
Curated OER
Projectile Motion
High schoolers observe projectile motion and calculate the speed of a baseball based on the time and distance traveled. They record the time, measure the distance, and draw the path of the ball's travel on a data table.
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
Problem Solving Application: Using Circle Graphs
In graphing worksheet, 4th graders use the information from a circle graph about carnation sales to complete the steps of problem solving. They determine what they know, and how they can use the graph. They find how many more pink...
Curated OER
Average Atomic Mass
In this average atomic mass instructional activity, high schoolers read about how the protons and neutrons make up the atomic mass of an element. They find the average atomic mass given four problems.
Curated OER
Proving For The Crew
Students write math questions that pertain to the Lewis and Clark Expedition. For this math lesson, students utilize resources in the classroom to help write mathematical questions and answers that relate to the Lewis and Clark...
Curated OER
Recycling
Students relate recycling to waste reduction. In this science lesson, students talk about the environment and how recycling certain natural resources actually saves on energy. They also discuss what type of recycling causes...
Curated OER
Solving Equations by Distributive Property
In this solving equations worksheet, students use the distributive property to find the value of the unknown. This one-page worksheet contains 10 multi-step problems. Answers are provided.
Curated OER
Factoring Trinomials
In this online math activity, students factor a series of trinomials given specific equations. This excellent resource allows the students to check their answers and to get "hints" should they run into difficulties.
Texas Instruments
Greatest Common Divisor and Least Common Multiple
Students solve problems using the GCD and LCM. In this algebra lesson, students factor and simplify equations using the greatest common and least common factors and multiples. They factor integers in pairs.
Curated OER
Mountain Math Worksheet
In this number sense worksheet, 5th graders solve 37 problems based on a given number. Students are asked to round the number, identify the number as even or odd and add 100 to the number.
Other
Help With Fractions: Subtracting Fractions
The rules for subtracting fractions with like or unlike denominators are clearly explained at this website. Even mixed number subtraction is tackled! This is an excellent place to get step by step explanations for working with fractions.
National Council of Teachers of Mathematics
The Math Forum: "Make One" Operations W Fractions Game
This card game will help students review the basic operations with fractions. The materials needed, the rules of the game, and several follow-up activities are provided here for the teacher as a lesson plan.
Oswego City School District
Regents Exam Prep Center: Adding and Subtracting Fractions
Use this site to learn how to add and subtract algebraic fractions, even if there aren't common denominators. Provides plenty of examples.
McGraw Hill
Glencoe: Self Check Quizzes 2 Add and Subtract Fractions Unlike Denominators
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of adding and subtracting fractions with different denominators. Each question has a "Hint" link to help. Choose the correct answer for each...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Add and Subtract Fractions
This Math Page tutorial explains how to add and subtract fractions and features a practice section at the very end of the lesson.
Doina Popovici
Math Play: Fractions Jeopardy
Assess your knowledge of adding, subtracting, multiplying, and dividing fractions with a game of jeopardy.
Better Lesson
Better Lesson: Adding and Subtracting Fractions Day 2
How would you add 2 1/2 and 2/3? How would you find the difference between 2 1/2 and 2/3? Students continue to develop strategies for adding and subtracting fractions.
Better Lesson
Better Lesson: Adding and Subtracting Fractions Day 1
If Ashley ate 1/2 pizza, Tatyana ate 1/3 of a pizza, and Tiffany ate 5/8 of a pizza, how much pizza did they eat altogether? What's the smallest number of pizzas they ordered? How much was left? Students work to develop strategies for...
PBS
Pbs: Subtraction of Fractions Using a Visual Model
Use a visual model to subtract fractions with unlike denominators. This video focuses on using an equivalent fractions chart to compare fractions and find the missing piece.
Other
Active Maths Limited: Adding & Subtracting Fractions: Whiteboard Resources
This is an excellent resource to visually illustrate adding and subtracting fractions by finding the lowest common denominator.
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