EngageNY
Applying Tangents
What does geometry have to do with depression? It's an angle of course! Learners apply the tangent ratio to problem solving questions by finding missing lengths. Problems include angles of elevation and angles of depression. Pupils make...
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
Learning Even and Odd Numbers
In this math lesson, young learners receive a numeral written on a paper and arrange themselves in chronological order. They illustrate skip counting by 2's, 5's, and 10's using their numerals and then complete an individual 100 chart by...
EngageNY
Using Sample Data to Compare the Means of Two or More Populations
Determine whether there is a difference between two grades. Teams generate random samples of two grade levels of individuals. Groups use the mean absolute deviation to determine whether there is a meaningful difference between the...
EngageNY
The Opposite of a Number's Opposite
It's said that opposites attract, but what about opposites of opposites? Individuals learn about the opposite of opposites using number lines. They complete a group activity in which members determine the opposite of opposites of...
Curriculum Corner
Winter Multiplication and Division Problem Solving Task Cards
A set of 18 winter-themed multiplication and division word problems is perfect for your math centers right before the holidays. Each problem is numbered and represented on a task card. Young mathematicians write their answers on a...
Fuel the Brain
Equal Grouping
Using division can be challenging for some young learners. However, these problems that are simple division without remainders, are designed to help your learners both conceptualize and visualize the problem before solving.
Curated OER
Bouncing off the Wall
Students watch a video clips before problem solving the use of angles in real world situations. They problem solve using spatial reasoning while connecting math to a sports activity that investigates the path of a bouncing ball.
Curated OER
Same Number
In this recognizing same numbers learning exercise, students count objects and draw lines to match the groups with the same number of items. Students match three groups.
Curated OER
Badminton or Basketball?
Students explain why for a group of n people, there are an equal number of possibilities for subgroups of size k (such that k < n) and size n - k.
Curated OER
Roman Bernardo: Solving Linear Equations
Mathematicians use an inquiry method to solve linear equations. In this linear equations lesson plan, young scholars practice solving equations using addition, subtraction, multiplication and division. They solve multi-step equations and...
Curated OER
Number-Line Squeeze
First graders investigate numerals and size by ranking different numbers based upon value. In this number sense lesson, 1st graders practice using the terms smaller, larger, less and more in order to organize numbers on a number line....
Curated OER
Model Repeated Groups
In this repeated groups activity, students use equal-shares drawing to solve a word problem, analyze and explain the process, make equal share drawings for 30 marbles and "explore it."
Curated OER
Grade 1 Math: Addition and Subtraction 3
In this consumer math worksheet, 1st graders practice counting coins. They circle the group of coins that are equal to the given money amount. They count dimes, nickels, and pennies.
Curated OER
Online video games plus curriculum-based math equals an engaging educational tool.
Seventh graders use online math games to practice understanding the skill of estimation and order of operations. For this lesson, 7th graders use the internet to play online games to strengthen their understanding of these...
Curated OER
Group Isomorphisms
Students identify and apply properties of triangles. In this geometry lesson, students define equilateral triangles by sides and angles. They build cardboard triangles as they study properties of triangles.
Curated OER
Multiplying in Any Order
In this mathematics worksheet, 2nd graders use counters to show an array. Then they write the multiplication fact for that array. Students also identify if the reverse of a multiplication fact is equal and explain why.
Curated OER
Fundamentals of Multiplication
Third graders examine how multiplication is a quicker and neater form of addition and how they can simulate the concept of groups and (sets) to construct the visual effect of multiplication by way of forming groups of (2's) (3's) and (4's).
Curated OER
2D Shapes for sorting into groups
In this geometry activity, students cut out and sort nine shapes. Shapes have up to nine sides and angles. They can be sorted according to number of sides, angles or shapes with equal sides.
Curated OER
A Mass of Pennies
Learners estimate and determine the number of cents (pennies) that are needed to equal the mass of a variety of common objects. They develop a process for measuring and explore concepts related to units of measurement.
Curated OER
Inequality and the 1/2 Benchmark
Fourth graders utilize fraction bar manipulatives to compare a variety of fractions to the fraction value 1/2. Pupils are put into groups, and they begin to see how fractions that look completely different actually represent the same...
Illustrative Mathematics
Guess the Marbles in the Bag
Use this activity to help your class develop an understanding of greater than, less than, and equal to with numbers valued between 1 and 10. Secretly place a number of marbles (between 1 and 10) in a brown paper bag. Then shake the bag...
Curated OER
Balanced Equations
Help your math class understand variables. This activity is for a visual learner. They will use weights and a balance scale to show how the sides of an equation are equal. Worksheet is included.
NTTI
If You Hopped Like a Frog
Get your frogs hopping by introducing them to the concepts of ratio and proportion. As a class, they perform arithmetic operations using ratios then discover how they represent quantitative relationships. In groups, they write their own...