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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...
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Activity
Under the Dome

The Candy Bowl

For Students 2nd Standards
Wonder how many pieces of candy a teacher can eat. Pupils watch a video of candy in a bowl as some candy is removed to be eaten and others are added. Learners devise questions about the situation along with estimated solutions. Scholars...
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Activity
Under the Dome

The Candy Bowl Revisited

For Students 2nd Standards
Time for more candy! Learners view a video of a candy bowl where some of the candy is removed and more placed back. Scholars come up with questions about the scenario to answer and request additional information from the teacher. At the...
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Worksheet
Curated OER

Estimating with Decimals

For Students 3rd - 6th
In this decimal learning exercise, students estimate sums, differences, products or quotients in a set of 35 decimal problems. Text pages are given, but text name is not included.
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Worksheet
Curated OER

Probability Games and Activities, Unit 10

For Students 4th - 6th
Looking for tangible ways to practice probability with your class? Through 4 activities, students practice with experimental probability, using math to make educated guesses, then testing it through physically completing the experiment....
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PPT
Curated OER

Recalling Multiplication and Division Facts

For Teachers 4th - 6th
A fabulous presentation on multiplication and division facts. In it, learners work in pairs to solve all sorts of problems, puzzles, brain teasers, and mental math problems. These problems focus on multiplication, division, rounding, and...
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Activity
Pedago Net

Acing Math

For Teachers 2nd - 8th
Deal me in! Elementary and middle school classes will love this selection of math games, all involving a deck of cards. From fractions to exponents to rounding up and down, the games cover such a variety of skills that your classroom...
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Lesson Plan
Curated OER

Explore: Finding Averages

For Teachers 6th
In this mathematics worksheet, 6th graders find the mean of a given set of numbers. Then they find the sum of the items in the set. Students also check their work by multiplying the mean by the number of items in the set.
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Lesson Plan
Curated OER

Estimating With Fractions

For Teachers 6th - 7th
Learners explore fractions. In this fraction instructional activity, students estimate fractions and estimate sums of fractions. Learners work with technology to develop math fluency.
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Lesson Plan
Curated OER

Double Your Money

For Teachers 2nd - 3rd
What a creative way to delve into adding large numbers! After listening to a story called The King's Chessboard, learners estimate how much money they would have each day following instructions based on doubling and exponentially...
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Lesson Plan
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Illustrative Mathematics

Equivalent fractions approach to non-repeating decimals

For Teachers 6th - 8th Standards
Trying to get your class to think of decimals as fractions and vice versa can lead to interesting discussions. After all, we can usually understand quickly that 1/4 is .25 but why is 1/7 not so easy to convert? This activity looks at...
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Lesson Plan
Curated OER

Volume Calculation Exercise

For Teachers 6th - 8th
Middle schoolers work with scientific notation and rounding as they determine volume. In this volume lesson, pupils attempt to calculate the volume of the planet Jupiter. They use rounding to two significant digits and scientific...
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Lesson Plan
Curated OER

Money Matters

For Teachers 3rd
Third graders make fair trades and exchanges of their money in order to have practical experiences with the essential "rules" of our place value system. They create groupings of tens, hundreds, thousands using play money and place value...
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Worksheet
Curated OER

Estimating With Decimals

For Students 4th - 8th
In this math instructional activity, students complete 14 problems where they estimate money amounts and multiplication products using numbers with decimals. Examples are provided in this well-designed instructional activity.
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Worksheet
Curated OER

Estimating the Cost of Shopping

For Students 3rd - 4th
In this math instructional activity, students choose 20 items from a shopping list that includes the price of each food. Students estimate the cost of the list and then figure out the actual cost.
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Lesson Plan
EngageNY

Decimal Expansions of Fractions, Part 1

For Students 8th Standards
Is it possible to add infinitely long decimals? As pupils complete the examples in the ninth lesson of this 25-part series, they determine that adding these decimals cannot be done without error. Their task is then to determine the size...
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Lesson Plan
Curated OER

Estimate, Solve, and Check

For Teachers 1st - 2nd
Young scholars estimate, solve, and check a series of addition and subtraction number and word problems. They write their estimates on a recording sheet, compute and write the answer in the next column, and check their answer with a...
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Lesson Plan
Curated OER

Can You Guess

For Teachers 2nd - 3rd
Learners develop useful strategies for mental calculation when estimating possible addition solutions. They mentally perform calculations involving addition and subtraction. Students state the estimated sum or difference between numbers.
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Activity
Curated OER

Jelly Beans for Sale

For Teachers 1st - 3rd
Students connect literature (story Jelly Beans for Sale by Bruce McMillan) to math concepts. In these estimating and money lessons, students work with jelly beans, unifix cubes, pennies, nickels, dimes, and quarters, to estimate and make...
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Worksheet
Curated OER

Estimate Differences

For Students 4th - 5th
In this estimating differences worksheet, students estimate differences by rounding to the nearest hundred. Answers are included on page 2.
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Lesson Plan
Curated OER

Let's Go Shopping: Estimation At The Mall

For Teachers Higher Ed
Students estimate the total cost of a shopping trip. In this estimation instructional activity, students use three different techniques to estimate how much a shopping trip will cost.
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Worksheet
Curated OER

A Sweet Story: Estimation

For Students 3rd - 4th
In this estimation story problem worksheet, students read a rhyme about Pop's candy store inventory and solve and explain word problems answers. Students solve five problems.
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Lesson Plan
Curated OER

Estimating Revenues

For Teachers 11th - 12th
In this economics worksheet, students write out a business plan that translates into an estimation of revenue made in the first three years.
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Worksheet
Curated OER

Equal Estimates- Decimals

For Students 3rd - 5th
In this decimal estimation learning exercise, students estimate a set of addition and subtraction problems, rounding to the nearest whole number, then place each problem in the box that contains its estimated sum or difference.

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