Curated OER
Ratios, Unit Rates, and Proportions
Explore the concept of ratios, unit rates, and proportions. Learners convert fractions and percents to decimals. They discuss rates and where they can be found in the real world. A hands-on experiment and numerous flash cards and...
Curated OER
Connecting Formulas Related to Geometric Figures
Students identify diagrams of quadrilaterals and circles by different names and classify the figures. They name the areas for each diagram and practice solving the formulas for each.
Curated OER
7th Grade Scientific Notation
Middle-school mathematicians identify the need for scientific notation. Learners convert large and small numbers into scientific notation. Students review the powers of ten and write them on the board in standard form and scientific...
Curated OER
Plan or Move
Middle schoolers note the similarities between decimals, fractions and percentages. They practice converting numbers between these types. They participate in an activity as well.
Curated OER
Do You Know Your Schedule?
Students identify classes in their schedules and associate the class with the time of day it is held. They then name classes in sequential order according to the period during which it occurs.
Curated OER
Operations with Fractions and Decimals
Complete a lesson that introduces and explores operations with fractions and decimals. Pupils estimate the reasonableness of a decimal computation. Then discuss what operation is needed to find an answer. Handouts, web sources, and other...
Shodor Education Foundation
Replacement and Probability
Middle and high schoolers explore the concept of probability. In this probability activity, learners conduct an experiment with a bag of marbles. Pupils draw marbles from a bag and determine the probability of drawing a particular color...
Curated OER
Sweet Treats...Even or Odd?
Learners work in pairs during this activity to explore even and odd numbers. Each pair is given a bag of candy which they have to count and divide up. If each partner has the same amount the number is even, if one is left over then the...
Curated OER
Investigation - Mathematical Reasoning: Tables and Chairs
Fourth graders draw pictures and diagrams as they attempt to solve a mathematical problem involving the arrangement of eleven tables shaped like equilateral triangles and the seating of exactly twenty-five people.
Curated OER
Finding Volume of Similar Figures
Upper elementary and middle schoolers examine the Volumes of Similar Figures. They investigate the relationship between corresponding sides and evaluate the volume of similar figures. Pupils record their findings on various activity...
Curated OER
Group Isomorphisms
Learners identify and apply properties of triangles. In this geometry lesson, students define equilateral triangles by sides and angles. They build cardboard triangles as they study properties of triangles.
Curated OER
Sweet Data
Students input data about the colors of their serving of M&M candies onto a spreadsheet. They create charts and graphs based on this information.
Pennsylvania Department of Education
Numbers Are Made of Parts
Children play with barnyard animal cards to practice composing and decomposing numbers. With their "secret number" of animal cards in a cup, they shake and spill them onto a barn story board, counting how many animals fall in the barn...
Curated OER
Shapes from Shapes
Geometric shapes are really cool. Examine triangles, quadrilaterals, trapezoids, rhombuses, parallelograms, pentagons, and hexagons with your class. They draw large shapes and small shapes then compare them to understand their shapely...
Curated OER
Basketball
Tap into the competitive nature of teenagers as your class practices setting up and solving rational equations. This activity starts with a specific ratio of games won to games played, then asks how many more games must be played to...
Curated OER
Investigation- What Does It Cost?
Eighth graders investigate percents by comparing different discounts on the same sale item, practice graphing percents, and look at reasonable and unreasonable "percents off" a sale item.
Curated OER
Writing Variable Expressions for Physical Models
Explore the concept of writing variable expressions by examining the similarities between expressions with numbers and expressions with variables. Emerging mathematicians determine rules for sequences and patterns before writing a rule...
Curated OER
Inverse (Indirect) Machines
Students observe relationships between quantities. Students complete activities for three different classes of levers. In groups, students build each type of lever. Students identify levers in their daily surroundings. Students observe...
Curated OER
Antacid Tablet Race
Students complete experiments to determine how rocket fuel is affected by surface area and temperature. They compare the reaction rates of antacid tablets. They discuss their results to complete the lesson.
Curated OER
Number Sense Sampler
First graders read a variety of stories containing mathematical word problems. They illustrate the math problems with manipulable counters.
Curated OER
Adding and Subtracting Integers
Sixth graders create electronic manipulatives to model addition and subtraction of integers. They are introduced to the software Inspiration and use techniques such as selecting and deselecting an object, resizing an object, moving an...
Curated OER
Tourism in London
Students discuss the tourist attractions that are in London. They examine how data can be manipulated by completing a worksheet. They plan a trip to a London attraction after conducting Internet research.