Curated OER
Divisibility Rules Using Scientific Calculators
Young learners apply divisibility rules to determine if a number is a factor of another number. They discuss what numbers are factors of another number and identify patterns using divisibility rules.
Curated OER
Himalayan Herds: Fractional Exponential Growth
Young scholars solve problems by identifying exponential growth and decay and differentiating between patterns, relation and functions. For this algebra lesson, students apply concepts of exponential growth to solve problems.
Curated OER
Scale Drawing
Students use ratio and proportions to solve problems. In this geometry lesson, students apply ratio and proportions to real life scenarios.
Curated OER
TI Math, Games
Students solve problems using technology. In this algebra lesson, students apply flow diagrams and computer codes to solve problems. They use the TI to view the graphs.
Curated OER
Positive and Negative Angles and Arcs
To better understand that the intersection point of two lines lies inside a circle, learners use their keen measurement skills. They discuss arcs, rays, tangent lines, and reflex angles. Then, they put their skills to work as they...
Curated OER
Communicating with "I Messages", Part 2
Third graders listen to ways they share their feelings with others. After brainstorming situations where "I messages" would be appropriate, pairs of students write messages from the lists they developed. They discuss how their messages...
Curated OER
Checkbook Math
Twelfth graders simulate balancing checkbooks by applying required mathematical operations. They examine newspaper ads from banks and compare various services they offer. They discuss the uses of credit and debit cards.
Curated OER
Adding and Subtracting
Students will add and subtract numbers less than 100 as well as understand and use the inverse relationship between addition and subtraction. They compose/decompose numbers up to 10 and understand a variety of situations in which...
Curated OER
Sorting Foods
A basic lesson on sorting awaits your charges. They sort a variety of foods while using the food pyramid, and identify the role of the food guide pyramid in helping people eat a healthy diet. Learners use an internet tool to apply their...
Curated OER
Discovering Perimeter
Twelfth graders apply perimeter measurement to items found in newspapers and calculate the cost in terms of feet or yards. They share answers and explanations with classmates.
Curated OER
Finding the Area of Triangles
Twelfth graders apply the formula for finding the area of a triangle to various problems. They work real life problems for finding the area of a bathroom and the cost of tiling it. They play a game, Triangle Bingo, where they match...
Curated OER
Probability: How Likely Am I to...?
Twelfth graders examine various ways probability is applied to daily situations. They use marbles and blocks to calculate the probabilities of picking certain colors. They also calculate the odds of picking a winning raffle ticket.
Curated OER
The Quest For Power
High schoolers investigate and apply properties of math. In this algebra and physics instructional activity, students define important vocabulary words to create a basic understanding of keywords. They perform experiments using concepts...
Curated OER
Exploring Exponential Growth and Decay Functions
Students differentiate between exponential growth and decay. In this algebra lesson, students solve exponential equations using properties of exponents. They use the Ti calculator to graph and analyze their functions.
Pennsylvania Department of Education
Multiplication Using Arrays
Explore the concept of multiplication by using arrays. Classmates use arrays to gain a better understanding of multiplication. They break arrays apart to model the distributive property of multiplication over addition. The relationship...
Curated OER
Multiplying Exponents vs. Powers of Powers
Use the power of a power property to solve exponential functions. The instructional activity refers to differentiating between multiplying or adding exponents to find the value, and how to find the product of a power of a power.
Curated OER
Domain: Operations and Algebraic Thinking
Practice basic operations for young mathematicians in fun ways! Using two decks of cards (Ace through 10 plus the joker), learners play "memory" by matching numbers that can be added to make 10 and writing number sentences. In another...
Curated OER
7th Grade Math: Algebra (Distributive Property)
With algebra tiles in hand 7th graders will uncover the wonders of the distributive property of multiplication. They will take a pre-test, define the distributive property, then model and practice using their tiles to solve basic...
Illustrative Mathematics
Equal Area Triangles on the Same Base II
A deceptively simple question setup leads to a number of attack methods and a surprisingly sophisticated solution set in this open-ended problem. Young geometers of different strengths can go about defining the solutions graphically,...
Illustrative Mathematics
Buying Bananas, Assessment Version
Practice with unit rates, proportions, and ratios when Carlos purchases an amount of bananas. Learners must interpret a graph to decide whether points on the same line represent similar proportional relationships. Use with lesson plans...
Reardon Problem Solving Gifts
Teaching Problem Solving Strategies in the 5-12 Curriculum
Address any kind of math concept or problem with a series of problem-solving strategies. Over 12 days of different activities and increasing skills, learners practice different ways to solve problems, check their answers, and reflect...
Illustrative Mathematics
Bake Sale
Put math into action with the real-life scenario of a bake sale. The participants at this bake sale are ready to divide their fresh-baked cookies into bags. It is up to your number crunchers to help decide how many cookies should go in...
Illustrative Mathematics
Coffee by the Pound
This is a great exercise in graphing proportional quantities to interpret the unit rate as the slope of a graph. It is not easy for learners to understand what a unit rate is. When it is presented as the slope of a linear line graph,...
Illustrative Mathematics
How Many Cells Are in the Human Body?
Investigating the large numbers of science is the task in a simple but deep activity. Given a one-sentence problem set-up and some basic assumptions, the class sets off on an open-ended investigation that really gives some...