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Curated OER
Rounding and Significant Digits
Practice rounding numbers to a certain decimal by solving in-class problems. Learners will solve several multiplication, division, addition, and subtraction problems while rounding to a specific decimal. They will also check their work...
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Using a Round-O-Meter to Estimate
Explore the concept of rounding numbers to the nearest dollar or dime. Youngsters use a "round-o-meter" to determine which direction to round a number. They make round-o-meters out of a piece of paper, a piece of string, and a paper clip.
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Rounding Numbers
For this rounding numbers practice worksheet, students use their math skills to round the numbers between 100 and 1000 to the nearest hundred.
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How to Round Numbers
Young scholars exercise rounding numbers to the nearest tens, hundreds, and thousands. In this rounding numbers instructional activity, students participate in a rounding numbers activity, covering the concept of rounding in both...
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Whole Number Rounding
In this whole number rounding worksheet, students practice using a time line to assist them in whole number rounding whole numbers.
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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...
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Go Fish
Help learners discover methods to estimate animal population. They will participate in a simulation of catching and tagging fish in order to estimate the fish population. They scoop and count goldfish crackers, record data, and use...
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Estimate How Many Seeds Are In a Fruit or Vegetable
Help mathematicians estimate how many seeds are in a given vegetable or fruit. They are divided into pairs and estimate the amount of seeds in a whole fruit without seeing the inside. They then cut the fruit or vegetable in half and...
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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.
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Estimation Using Goldfish Crackers: Math
Second graders explore estimation and rounding concepts using goldfish crackers and a song! They solve problems by estimating and rounding numbers and pick numbers within reason to represent certain objects.
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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...
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Solving Problems
Second graders become familiar with need strategies for computation of money problems and estimating sums. In this computation activity, 2nd graders solve real life problems to understand estimation and money problems.
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Telling Time as an Everyday Use of Numbers
How can we estimate time? Have your young mathematicians make a clock. Then they compare and contrast types of clocks. They practice writing times in two different ways and make a book about telling time.
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Make a 100
Second graders develop an understanding of 100 and the quantity for which it stands and examine the relationship between 100 and 10 by estimating the number of jelly beans in a jar.
Laboratory for Atmospheric and Space Physics
Where Are We Going?
Come take a ride on the space bus! Scholars go on an imaginary trip to pick up their peers from the inner and outer planets while reinforcing math skills. First, learners round decimals to identify each planets' distance from Earth....
For the Teachers
$1 Math
Captivate your class by having them find the value of their names, different zoo animals, musical instruments, etc.,with a mental math lesson. Using the coding formula listed, children learn to fluently estimate and calculate...
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A New Twist on the Keyboard
Elementary learners design and construct a diagram of a keyboard on the floor of the classroom. They outline the keyboard in masking tape by estimating size, proportion, and key position. Then they can interact with the giant keyboard as...
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Word Value
Students investigate the concepts of adding, estimating, and ordering. The lesson plan uses the alphabet as an example illustration. The students practice the calculations in class in order to ensure mastery.
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Where Are We Going?
Learners practice rounding numbers to ones and tens places, multiplying numbers, and working with simple fractions. They study the placement and distances of planets in the Solar System.
Curriculum Corner
Guest Teacher Plans (Grade 2)
Be prepared the next time you're in need of a substitute with a daily plan equipped with an assortment of activities covering subjects math, reading, word work, writing, and science.
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Estimate, Solve, and Check
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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Making Change
Second graders explore how to incorporate a new type of technology, the cash register and/or a calculator, as a motivational tool for solving real life problems. They practice estimating money and counting back change from $20.00.
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Special Snack
Students explore grocery store circulars to choose items for a snack. For this snack math lesson, students must plan a class snack for $20.00. Students create a list estimating costs. Students view lists and choose one for...
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M&M Graphing and Probability
Students sort, classify, and graph M & M's. They create pictographs and bar graphs with the colors and numbers in each bag of M & M's. They calculate the ratio and probability based on class results.