Interactive
CK-12 Foundation

Add and Subtract Decimals with Front-End Estimation: Wooden Beams

For Students 6th - 8th Standards
A six-question interactive tasks mathematicians to solve addition and subtraction problems using front-end estimation. Question types consist of multiple-choice and true or false. A set of wooden beams that can be measured using moveable...
Activity
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Baylor College

Food: The Math Link

For Teachers K - 5th Standards
Enrich your study of food science with with these math worksheets. They offer a variety of food-related word problems that are great practice for multiplying, identifying fractions, estimating length, and performing calculations...
Activity
Curated OER

Pi Day: The Other Math Holiday!

For Teachers 9th - 12th Standards
Happy Pi Day! This collection of games, experiments, and activities leads participants through an exploration of the many aspects and attributes of that mysterious quantity, pi. Activities range from using statistical...
Lesson Plan
Curated OER

Feature column: Hands on Math With Technology

For Teachers K - 2nd
Young learners will view a math adventures video and practice math concepts.  Afterwards they will navigate through Internet sites to participate in teacher selected math adventures. This guide walks you through integrating...
Lesson Plan
Curated OER

Pumpkin Play

For Teachers K
Have you ever examined a pumpkin and estimated the number of lines it has? In this math lesson plan, students count the actual number of lines, record and graph the results. They investigate the circumference, weight and buoyancy of the...
Unit Plan
Buffalo State

Adding and Subtracting Positive and Negative Integers

For Teachers 7th
A well-rounded unit on positive and negative integers is a great addition to your middle school math class. Learners work through five activities, each focused on a different skill, before playing a Game of Life to practice the...
Lesson Plan
Agriculture in the Classroom

Pumpkins... Not Just For Halloween

For Teachers 3rd - 5th Standards
Celebrate fall with four pumpkin themed hands-on activities! After learning about pumpkins, scholars complete two activity sheets that reinforce estimation and word problems. They then plant pumpkin seeds and bake a pie in...
Worksheet
National Security Agency

Go One-on-One with Decimals

For Students 4th - 5th Standards
Shoot and score with three basketball-themed lessons about decimals. Young mathematicians compare game statistics, make trash can hoops, and play a data spinner game to practice identifying digits and values within decimal numbers.
Printables
Virginia Department of Education

Mathematics Vocabulary Cards - Grade 2

For Teachers 2nd
Augment your math curriculum with posters detailing several concepts important to second grade math. Each poster features one math term from geometry, measurement, probability and statistics, computation and estimation, numbers and...
Lesson Plan
Mathematics Assessment Project

Estimating Volume: The Money Munchers

For Teachers 7th Standards
Don't stuff money under your mattress. To find out why learners first complete a task determining how $24,000 in cash would affect the height of a mattress and whether this same amount would fit into a suitcase of given dimensions....
Lesson Plan
Curated OER

Mental Math Relay

For Teachers 4th
Fourth graders use mental math, paper and pencil and calculators to solve problems. They are put into teams and race to see who gets the most correct answers per round. This lesson strengthen mental math and estimation skills.
Assessment
Los Angeles County Office of Education

Assessment for the California Mathematics Standards Grade 3

For Students 3rd Standards
Assess scholars' knowledge with a 22-page assessment that covers place value, patterns, probability, estimation, measurement, geometric figures; and their ability to add, subtract, multiply and divide proficiently. 
Lesson Plan
Curated OER

How Far Can You Jump?

For Teachers K
Students estimate the distance of student's broad jumps. This activity can take place in the block center with a small group of students. They are explained that they are going to jump from a starting point (marked with the masking...
Lesson Plan
Curated OER

Estimation Station

For Teachers K - 3rd
Students use this hands-on math center to explore estimation and counting by tens with Goldfish.
Lesson Plan
Curated OER

Rising Gas Prices – Compounding and Inflation

For Teachers 9th - 12th Standards
Financial literacy skills and exponential models are connected by the compound interest formula in this task centered on inflation calculations. Collaborative learners get experience collecting data from the given websites and exploring...
Lesson Plan
Curated OER

Measurement Scavenger Hunt

For Teachers 5th - 7th
Students review estimation, measurement, fractions, decimals while familiarizing themselves with a new classroom at the beginning of the year.
Lesson Plan
Curated OER

Estimation Station

For Teachers K - 5th
Students explore estimation and count by tens with Goldfish crackers.
Lesson Plan
Curated OER

Jack and The Beanstalk Estimation

For Teachers 2nd - 3rd
Introduce the day's lesson by reading Jack and The Beanstalk by Richard Walker, and then review the concept of area with your class. We don't always need rulers to measure, though! Teach learners how to use their hands to help us measure...
Lesson Plan
Curated OER

Examining Estimation

For Teachers 2nd
Second graders participate in various activities which help them explain and explain the difference between an estimate and an exact amount.
Lesson Plan
Curated OER

It's Close Enough: Rounding and Estimation

For Teachers 2nd
Second graders round to the closest five, ten, and hundred. They use place-value concepts of grouping based upon powers of ten (thousandths, hundredths, tenths, ones, tens, hundreds, thousands) within the decimal number system.
Worksheet
Curated OER

Estimate Distances on a Map

For Students 3rd - 5th
In this estimation worksheet, students estimate the distance on a city map based on the scale given to them. Students answer 4 short answer questions.
Worksheet
Curated OER

Center of Mass, Tangent Line Error Bound

For Students 10th - 12th
In this center of mass worksheet, students determine the center of mass of an isosceles triangle. They examine functions and determine the tangent error bound.  This one-page worksheet contains 5 problems.
Worksheet
Curated OER

Circle Graphs

For Students 4th - 6th
In this circle graphs worksheet, students solve and complete 8 different problems that include word problems referring to two different circle graphs shown. First, they follow the directions for each problem and complete the table that...
Lesson Plan
Curated OER

Puzzling Perimeters

For Teachers 3rd
Third graders use estimation, fractions and decimals to determine the perimeter of objects in the classroom. They are given a worksheet with a list of the items on it. The worksheet has columns beside each of the items for estimation and...