Curated OER
Double Your Money
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...
Mathematics Assessment Project
Estimating Length Using Scientific Notation
Would you rather have a million dollars or 1 x 10^6 dollars? To find the answer to this question, class members first complete an assessment task converting numbers between decimal notation and scientific notation. They then take part in...
Curated OER
Rounding Numbers
Fifth graders demonstrate rounding numbers to a sensible level of accuracy and in context. They discuss rounding numbers for newspaper headlines, complete a table of grocery items that need to be rounded, and observe and demonstrate...
Roy Rosenzweig Center for History and New Media
European Explorers
To compare how the Spanish, French, and English approached the exploration of North America, class groups examine primary source documents and become experts on one of four explorers: Francisco Coronado, Robert LaSalle, Samuel de...
Curated OER
Rounding Numbers
Fourth graders complete math problems where they round numbers to the nearest ten, hundred, or thousand. In this rounding lesson plan, 4th graders explain how to round the problems they solve.
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Rounding to the Nearest Ten
Third graders review rounding to the nearest ten. For this rounding lesson, 3rd graders use a hundred chart to help them in rounding to the nearest ten. Additionally, students practice rounding on the computer.
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Base-Ten Rounding
Fifth graders explore the base-ten rounding method. Using base-ten blocks, 5th graders build two-, three-, and four-digit numbers. After discussion, they round numbers to the nearest 10. Using the computer, students participate in a...
Curated OER
Lesson 2 Ordering Numbers
Math wizards begin the lesson by comparing and ordering rational numbers. Using a number line, they discover the relationship between the numbers and practice ordering them in the correct way. They also review proper techniques for...
Curated OER
Decimals: Collaborative Lesson
Students explore mathematics by participating in a group activity. In this number value lesson, students identify the uses for decimals and how to best estimate whole numbers based on decimals and fractions. Students collaborate with...
Curated OER
Expert Estimators
A rich and well-designed lesson on estimation is here for you. The lesson utilizes a video; ITV Series: The Eddie Files 'Estimation: Going to the Dogs,' along with many websites. Several fantastic learning activities are...
Curated OER
Fractions and Decimal Equivalents: Fifth Grade
Sometimes a skeleton is all you get. This lesson outline provides teachers with a basic lesson flow. Pupils will pre-test, order place value names, use manipulatives, and build and compare numbers. How this is to be done is not...
Curated OER
Estimation With Whole Numbers
In this elementary math worksheet, students find the answers to the 10 problems written in the multiple choice format in order to develop critical thinking skills.
Curated OER
Multiplying Decimals and Mixed Numbers
Students multiply decimals and/or mixed numbers. They explore the effects of multiplying decimals and mixed numbers. They practice estimating answers when a number is multiplied by a decimal or mixed number.
Curated OER
It's Close Enough: Rounding and Estimation
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.
Curated OER
Measurement and Conversion of Units in a Recipe
In a cross-curricular measurement and literacy lesson, your class will identify and compare cooking measurement instruments. They read a recipe and sequence a set of similar instructions in which the steps have been mixed up....
Curated OER
Investigation - Snack TIme
Students explore solving addition and subtraction problems. They solve real life problems. Students participate in a simulation activity to find the missing addend. They demonstrate adding and subtracting whole numbers.
Curated OER
A Rounding Review
Fourth graders review rounding to the nearest ten, hundred, and thousand with this fun lesson centered around a visit to the computer lab.
Curated OER
Base 10 Rounding
Learners build two, three, and four digit numbers using base ten blocks and round those numbers. In this rounding numbers lesson, students work in pairs and build numbers using base ten blocks.
EngageNY
Margin of Error When Estimating a Population Proportion (part 1)
Use the power of mathematics to find the number of red chips in a bag — it's a little like magic! The activity asks learners to collect data to determine the percentage of red chips in a bag. They calculate the margin of error and...
Curated OER
Estimating Percentages
In this estimating percentages worksheet, pupils read a problem that gives the percentage of a dollar amount, for example; 8.6% of $75.09 = $5.46. They estimate to determine if they believe the problem is "definitely wrong" or "correct...
Curated OER
Reversing Numbers
Second graders solve a math word problem involving the addition of two digit numbers. They discuss the problem as a class, independently explore the problem, and discuss as a class the solution and how they organized their reversed...
Curated OER
Number Sense
First graders practice rounding 4 digit numbers using place value concepts. In this estimating sums and differences instructional activity, 1st graders explore clustering, rounding, and front end estimation as methods for rounding decimals.
Curated OER
Reasonable Estimates
Help pupils explore estimation. They will make estimates and discuss when you might use an estimate. Then they discuss if their estimates are reasonable.
Curated OER
Introduction to Decimals
Young math whizzes complete the online instruction, then solve 20 problems about identifying decimals, comparing decimals and fractions and ordering decimals.