Shodor Education Foundation
Pythagorean Theorem
Most adults remember learning about the Pythagorean theorem, but they don't all remember how to use it. The emphasis here is on developing an intuitive understanding of how and when to use the theorem. Young mathematicians explore...
K12 Reader
Eratosthenes: Geographer and Mathematician
Mathematicians can be famous, too! Introduce your class to Eratosthenes with a reading passage. After they complete the passage, learners respond to five questions, some of which require opinions and others reading comprehension skills.
Curated OER
Wheat Kernels Bar Graph
Third graders create a bar graph to record how many kernels were in a wheat stalk. They write in math journals two questions from interpreting the graph. They solve math problems from other students.
Curated OER
Estimation
Learners explore the concept of estimation. In this estimation lesson, students discuss making estimates through teacher led discussion. Learners use the Internet to complete an activity where they must estimate the length of lines.
Curated OER
Fraction Facts
Students explore the concept of fractions. In this fractions instructional activity, students perform basic operations such as addition and subtraction with fractions. Students play a game on the computer called 'Fraction Four' that...
Curated OER
Introduction to Fractals: Geometric Fractals
Students explore the concept of fractals. In this fractals lesson, students discuss Sierpinski's Triangle using an applet. Students discuss the patterns involved with fractals. Students discuss the area of Sierpinski's triangle as the...
Curated OER
Recognizing Patterns
Middle schoolers explore the concept of patterns. In this patterns lesson, students use applets to manipulate tessellations. Middle schoolers predict the next number in a sequence by recognizing patterns.
Curated OER
Prime Factorization
Students work with prime numbers. In this prime factorization lesson, students review writing numbers in their prime factorization form and solve multiple problems.
Curated OER
Sampling Techniques
Sixth graders examine how to select samples and apply them to an experiment. For this sampling lesson, 6th graders use a bag of yellow and blue cubes to take a sample. They predict how many of each color there are the bag. They set up...
Curated OER
M&M Caper
Students participate in a game with M&M's to be introduced to percents and ratios. Individually, they estimate and record the number of candies they believe the bag holds and the amount of each colored candy. They open the bag and...
EngageNY
Population Problems
Find the percent of the population that meets the criteria. The 17th segment of a 20-part unit presents problems that involve percents of a population. Pupils use tape diagrams to create equations to find the percents of subgroups...
Curated OER
Negative Exponents
Students solve negative exponential functions. In this algebra lesson, students define the properties for rewriting functions with negative and zero exponents. They use a robot to create a visual of what is happening to the negative...
Curated OER
Spin Your Turbines
Students relate electrical power and how it works to math. In this geometry lesson, students analyze how a hydroelectric plant works and calculate the amount of electricity that is produced by a typical generator. This lesson uses...
Curated OER
Data Analysis
Twelfth graders collect and analyze data. In this secondary end-of-course mathematics lesson, 12th graders formulate a question they would like to answer and decide on an appropriate means of data collection. Students...
EngageNY
A Synthesis of Representations of Equivalent Ratio Collections
Make all the ratio representations fit together. The 15th segment in a series of 29 presents ratio problems to solve. Scholars use a variety of representations to respond to the questions. The problem set has pupils show how the...
Curated OER
Chill Out
Students investigate Newton’s Law of Cooling. In this Algebra II/ Pre-Calculus lesson, students explore exponential regression as they conduct an experiment to simulate the temperature variations that occur as a liquid cools. ...
Curated OER
Finding Remainders in Pascal's Triangle
Students use clock arithmetic to find remainders. For this patterns in math lesson, students explore the relationship between clock arithmetic and remainders using a computer applet. Students also identify patterns in Pascal's triangle...
Curated OER
Using Graphs and Charts
Students complete T charts and manipulate numbers using graphs and charts. In this math graphs and charts lesson plan, students review the concepts of pattern and function. Students then complete practice pages where they manipulate...
Curated OER
Exact or Estimation
Students solve problems using estimation and exact calculations. In this algebra lesson, students use gum balls and thread to create hands on manipulatives to solve problems. They calculate the average of their total data.
Curated OER
Number Sense
Eighth graders participate in a lesson plan that is concerned with reviewing basic math concepts using the four operations. The activity is composed of a math game that is played by them.
Curated OER
Multiplying by 10, 100, & 1000
Students understand that a shortcut can be used when multiplying by 10, 100 & 1000. In this multiplying lesson, students mentally multiply by 10, 100 & 1000. Students complete a worksheet with multiplication problems.
Curated OER
Composition of Reflections
Young scholars perform reflections and translations of polygons. In this geometry instructional activity, students perform reflection in two parallel lines. They use Cabri to observe the transformation and rotations of each shape.
Curated OER
Linear Modeling: Functions
Pupils analyze linear functions. In this algebra lesson, students create a linear model to relate coordinate pairs. They evaluate and solve equations.
Curated OER
Using Arrays to Show Multiplication Concepts
Students draw arrays. In this multiplication lesson, students draw arrays, write multiplication sentences for arrays and discuss how changing the order of the factors affects the product.
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