Curated OER
Student Census
Learners collect data from their peers and store the information in a database. As students manage the information they realize the usefulness of a database as a tool to manage large amounts of information in an efficient and accurate...
Curated OER
Triangle Inequality
Students discover that the sum of the lengths of any two sides of a triangle must be greater than the third side. They are shown how a triangle is formed using three strips such as that the triangle is seen inside the strips.
Illustrative Mathematics
Comparing Rational and Irrational Number
Algebra learners must know how to use rational numbers to approximate irrationals. This resource asks participants to decide which number is larger without using a calculator. It makes a great exercise to use as a five-minute transition...
California Academy of Science
Building Better Buses: Transportation Design Challenges
Scholars learn about a series of three challenges when they design a bus system for a small town. They determine the bus routes and then figure out the best type of fuel to use before considering the cost of going electric. Learners...
Curated OER
Multiplication Algorithm (1)
Third graders in a 3rd grade math class make connections from prior instruction and mastery to solve problems in new learning situations. Using logical thinking and prior knowledge to solve current math problems is the focus of this...
Curated OER
Getting to the Bottom of the Pyramids
Middle schoolers work together to develop logical arguments about pyramids and chain letters. They share their ideas with other groups and create a diagram showing the breakdown. They discuss the results.
Curated OER
The Farmer's Sheep
Students use problem solving skills, logical thinking, and their ability to work sequentially in order to solve an algebra problem. They listen to the problem read aloud by the teacher and devise a plan in order to solve the problem.
Curated OER
Adam's Watch
Third graders use their watches to tell the time while the teacher lists their responses on the board along with the reasons for them (set incorrectly, gain/lose time). They solve the problem in pairs and focus their thinking on the...
Curated OER
Patterns
Second graders create an ABAB pattern with their name. In this early elementary math lesson, 2nd graders first model their names in an ABAB pattern with unifix cubes. They then recreate the pattern using letter stamps on KidPix.
Curated OER
My Son is Naughty
Learners find factors of numbers; work systematically; and use logic to explain away certain possible number combinations. They then devise and use problem solving strategies to explore situations mathematically.
Curated OER
Venn Diagram with Blocks
Fifth graders classify blocks according to their attributes. In this math lesson, 5th graders will identify attributes of blocks, sort them, then form the groups into a Venn Diagram, and write ratios using the attributes.
Curated OER
Missing Square
For this missing square worksheet, students find the missing square amongst a group of numbers with the number that logically belongs there. Students complete 1 problem.
Curated OER
Divided We Stand
Students figure out how to arrange seating in a concert hall given specific requirements. They better explain how dividing can allow us to arrive at mathematical solutions quickly and logically.
Curated OER
Noughts
Students try to figure out the strategies to the game Noughts. Students logic must play a part in the process of the game. Students apply the symmetries of regular polygons. Students devise ways to critically follow a chain of reasoning.
Curated OER
Bubblegum balls
Students look for patterns to solve problems involving statistics using different colored gumballs. They should be able to look for and find out all the possible outcomes based upon inference and trials.
Curated OER
Not So Snappy 4
For this math worksheet, students work out the word problems in an attempt to use the skills of logic and deduction to arrive at the correct solution.
Curated OER
Legs in the Barn
Students listen to the problem being read. They then brainstorm possible approaches and are encouraged to plan ways of recording their work so that others examine what they have done and share their findings.
Curated OER
The Rock Pool
Third graders use number sense and appropriate problem solving techniques to solve the assigned problems. They write out the solutions to the assigned problems. They work in groups to solve the problem before reporting back to the whole...
Curated OER
Robots
Fourth graders devise and use problem solving strategies to explore situations mathematically (guess and check, make a drawing, use equipment). The use of logical reasoning is a focus of this lesson.
Curated OER
Finding Satisfactory Solutions
Students explore the creative aspects of problem-solving and practice creative problem-solving strategies in the context of a story problem. They decide where to locate ice cream stands in a town so that no one has to travel too far to...
Curated OER
The Farmer's Sheep II
Fourth graders listen to the story of a farmer who only likes to be able to see nine sheet from his window. His wife has brought him another sheep - what now? They work together in pairs to solve the problem and share solutions.
Curated OER
Fuel Saving
Students explore the problem of percentages. Students find a given fraction or percentage of a quantity. Students devise and use problem solving strategies on problems explored.
Curated OER
Can Stack
Students are able to find the rule for summing consecutive numbers;
identify the pattern of triangular numbers. They then solve the given problem using logic and mathematical reasoning.
Curated OER
No-More-In-A-Line
Students and teacher discuss square windows and their symmetry. Students work on the problem given and discuss any difficult ideas. They work in groups to use a systematic approach to get all possible answers.