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Illustrative Mathematics
Dividing by One-Half
Understanding when to divide by two or one-half can be confusing. Here is an activity that gives four different scenarios. It is up to your number crunchers to decide if they divide by two or one-half. The easiest way to approach the...
Curated OER
Relations and Graphs
Here is a simple, yet clever lesson plan on how to teach the important concepts of greater than, less than, and equal to. Pupils write their names down on grid paper - one letter per box. They compare their names and find a name that is...
EngageNY
Circles, Chords, Diameters, and Their Relationships
A diameter is the longest chord possible, but that's not the only relationship between chords and diameters! Young geometry pupils construct perpendicular bisectors of chords to develop a conjecture about the relationships between chords...
EngageNY
Unknown Angle Proofs—Writing Proofs
What do Sherlock Holmes and geometry have in common? Why, it is a matter of deductive reasoning as the class learns how to justify each step of a problem. Pupils then present a known fact to ensure that their decision is correct.
Curated OER
Conditional Probability and Probability of Simultaneous Events
Your statisticians examine the characteristics of conditional probability and the probability of simultaneous independent events. They perform computer activities to find probabilities for simple compound events. They examine the...
Illustrative Mathematics
Running to School, Variation 2
Rose's commute to school is a fractional distance. After she runs part of the way, your class needs to determine what fractional distance she ran. This problem explores fraction operations through modeling and computation. The...
Curated OER
Number Problems
Students write equations for problems. In this number instructional activity, students add, subtract, multiply and divide numbers to solve for a variable. They rewrite word problems using algebraic symbols.
Curated OER
Jon and Charlie's Run
Let's use math to solve an argument. Jon and Charlie are debating about who can run farther, but who is right? That's what your class will figure out as they apply their understanding of fractions to this real-life situation. A simple,...
Curated OER
Gender Equity: I Said, She Said
Students collect and analyze data on classroom participation. In this gender equity lesson, students use tally marks to collect data on the sex and numbers of students who participate in classroom discussions. Students...
Curated OER
Putting the Pieces Together
Children explore fractions on a conceptual level by making individual quilt squares. Each student works with small paper swatches to divide them into pieces that represent a given fraction. The class is then separated into groups and...
Curated OER
Roman Bernardo: Solving Linear Equations
Mathematicians use an inquiry method to solve linear equations. In this linear equations lesson, students practice solving equations using addition, subtraction, multiplication and division. They solve multi-step equations and equations...
Curated OER
Diversity: Appearance
Students collect several 'diversity beans' and sort them into piles based on the color of the beans and if they believe they will enjoy the flavor concluded from the outside appearance. In this diversity lesson, students...
Curated OER
Forces and Motion
Middle schoolers build parachutes for chicken eggs. In this physics lesson, students describe the forces acting on a falling object. They predict which of the three parachute models they made has the best chance of keeping the egg intact...
Illustrative Mathematics
Painting a Room
This real-life math problem concentrates on developing the understanding of dividing a unit fraction by a whole number. It allows students to draw out a solution to aid their thinking. The well-written answer sheet describes common...
Cornell University
Atomic Bonding
Explore the connection of surface area to bonding within atoms. Learners complete lab investigations to model changing surface area with different sizes and concentrations of atoms. A flour fireball demonstration follows the labs to...
Curated OER
Cool Tools to Solve Challenging Word Problems
Students explore math functions by completing worksheets in class. For this word problem lesson, students read the story A Remainder of One and practice solving division problems from the story. Students complete a worksheet which...
Curated OER
Floating Fishes: Boat Sinking Lab
Cut milk cartons in half to make boats and let investigators attempt to sink them. They add dividing walls and observe what happens if marbles are put into only one of the newly formed compartments. Vocabulary is provided: buoyant force,...
Curated OER
Census and Redistricting
High schoolers learn why the census makes a difference. In this U.S. Census lesson plan, students learn about the methods and politics of redistricting as they explore their local congressional districts and debate the merits of...
Mathematics Vision Project
Module 4: Rational Functions
Time to study the most sensible function — rational functions! The seven-lesson unit develops the concept of a rational function through a connection to rational numbers and fractions. Scholars graph functions, solve equations, and...
Curated OER
How Big Are Earth, Sun, and Moon?
Third graders draw what they believe is in space on a dry erase board. In groups, they are given a beaker half filled with water and they add a teaspoon of oil, observing the different layers that form. To end the activity, they...
Curated OER
Diversity Music
Students explore different types of music. In this music diversity lesson, students are divided into groups to listen to an assigned type of music. Students list characterisitcs of each type of music then assign a jelly bean...
Curated OER
Stargazers
Students discuss the light spectrum and light waves as well as how the properties of light and color have contributed to important discoveries about properties of the universe. They research the term redshift and the redshift phenomenon...
Curated OER
The Color Spectrum: How Does it Work?
Create models of the infrared, visible, and ultraviolet portions of the electromagnetic spectrum. Working in small groups, your class can investigate metric conversions calculations. They will find the length of the waves in nanometers,...
Curated OER
Dividing Line Segments into n Congruent Parts
Learners identify lines, and line segments. In this geometry lesson, students divide line segments into equal congruent parts. They complete a laboratory activity dealing with lines and segments.