EngageNY
Using Matrix Operations for Encryption
Data encryption is an important security measure for sensitive data stored on computers. Pupils learn how to utilize matrices for creating code. They also get a great review of matrix multiplication, inverse matrices, and the identity...
EngageNY
The Definition of Sine, Cosine, and Tangent
Introduce your classes to a new world of mathematics. Pupils learn to call trigonometric ratios by their given names: sine, cosine, and tangent. They find ratios and use known ratios to discover missing sides of similar...
EngageNY
Designing a Search Robot to Find a Beacon
Build right angles using coordinate geometry! Pupils explore the concept of slope related to perpendicular lines by examining 90-degree rotations of right triangles. Learners determine the slope of the hypotenuse becomes the opposite...
EngageNY
Correspondence and Transformations
Looking for a strategy to organize the information related to transformations? The materials ask pupils to identify a sequence of rigid transformations, identify corresponding angles and sides, and write a congruence statement. They...
Curated OER
Rule for Equality of Fractions
Here is a lesson on equality of fractions. Learners use fraction bar manipulatives as the lesson goes along to help them visually understand equivalent fractions. The activities described are top-notch, and there is a worksheet embedded...
Curated OER
Solving Problems Involving Subtraction
Here is an excellent lesson plan on solving subtraction word problems using fractions and mixed numbers. Learners complete three activities that will help them to explore and better-understand the world of mixed numbers. Fraction bars...
K20 LEARN
Comparing Numbers And Fruit—More Or Less: Comparing Numbers
A discussion begins a lesson on comparing numbers. Pupils explain how they can show a number, then visit math centers to explore number-making tools. A story read-aloud of More or Less by Stuart Murphy identifies language for...
Curated OER
Get in Shape with Geometry
Using geoboards, computer programs, and hands-on manipulative materials, elementary schoolers engage in a study of two and three-dimensional geometric shapes. This lesson is chock full of good teaching ideas on the subject, and the...
Exploratorium
Rotating String Shapes
Here is a very interesting way of studying triangles and polygons. Pupils work together and use pieces of string to create a variety of shapes. Depending on how many kids are manipulating the string at any one time, the number of...
Willow Tree
Equations of a Line
Each form of a linear equation has its purpose — pupils just have to find it. Building on the previous lesson in the series, learners examine point-slope and standard form. Using point-slope form, pupils write the equation of a...
CK-12 Foundation
Negative Exponents
Watch the exponent expression do the negative exponent dance! An interactive lesson uses an animation to show how negative exponents become positive. Learners manipulate the expression and then respond to conceptual questions.
CK-12 Foundation
Evaluate Relations with Scatter Plots: Regression and Correlation
Introduce the concept of a correlation coefficient using an interactive lesson. Learners begin by manipulating a correlation coefficient and watching a graph change to represent the new value. Questions help strengthen their...
Curated OER
Beyond the AB Pattern in Dance
Learners demonstrate various patterns using dance. In this expressive arts lesson, students are led in a warm-up to demonstrate the AAB pattern, which includes spinning and jumping. Learners are broken up into groups and perform several...
Curated OER
Computation with Fractions
Upper graders are introduced to the topic of fractions and percentages. In groups, they discuss real world situations in which fractions are present, and they complete a worksheet solving problems with common and uncommon denominators....
Curated OER
Probability
Here is a classic activity used to introduce your class to the concept of probability and data collection. They will roll one die 30 times, then record and discuss the results. Great introduction, but too shallow to be considered a...
Didax
Multiplication Facts
Learning their multiplication facts is a big step in the education of young mathematicians. Help achieve this goal with the support of this collection of instructional materials.
Curated OER
Which Fraction is Bigger or Smaller?
Compare fractions with common numerators! Pupils look at fractions with different denominators and the same numerator to find which one is bigger. They look at hands-on manipulations of fractions to understand the concept of why one is...
Curated OER
Pattern Block Activities
Young scholars practice various math skills by using manipulative activities. In this math manipulative lesson, students sort shapes, build hexagons, and build shapes using manipulatives. These activities would be great for parent ed...
Mathematics Assessment Project
Representing 3-D Objects in 2-D
How does the shape of the surface of water in a container change as water leaks out? After tackling this question, learners take part in a similar activity with more complex figures.
Curated OER
Counting Lesson Plan
Students practice counting, reading, and writing the numbers 0 through 5. In this basic counting lesson, students review a counting book, use macaroni as a manipulative, and learn a song as a means to learn and practice writing and...
Curated OER
Story Problems - Math
Students participate in hands-on, computer activities to demonstrate the addition and subtraction of mathematical situations. Given a story problem, students determine when to add or subtract. Using word processing technology, students...
Curated OER
Two-Digit Addition at the Zoo
Your second graders explore two digit addition with regrouping. They will investigate problem solving strategies within the context of a trip to the zoo. Multiple resources and assessments are provided.
Chicago Children's Museum
Simple Machines: Force and Motion
Get things moving with this elementary science unit on simple machines. Through a series of nine lessons including teacher demonstrations, hands-on activities, and science experiments, young scientists learn about forces, motion,...
Curated OER
Modeling Multiplication and Division of Fractions
Create models to demonstrate multiplication and division of fractions. Using fraction tiles to model fractions, pupils explore fractions on a ruler and use pattern blocks to multiply and divide. They also create number lines with fractions.