Curated OER
Explora-Pond: Surface Area
Learners estimate the surface area of a pond using ratios and chance methods of estimation. They gain insight into how well estimations based on chance outcomes match the average of a maximum area estimation and a minimum area estimation.
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Why Guess When You Can Estimate
They apply various strategies in their estimations. They analyze the differences between guessing and estimating. They estimate the number of beans and jellybeans in egg cartons and jars respectively.
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Sliding Along
Third graders explore the concept of linear measurements and how they work. Coins are used to reinforce the process.
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Measurement Scavenger Hunt
Students review estimation, measurement, fractions, decimals while familiarizing themselves with a new classroom at the beginning of the year.
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Object Graphs
Students identify geometric shapes, demonstrate construction of an object graph, compare sets of objects, estimate which student has the most geometric shapes in his or her bag, and play computer game Jump Start Kindergarten.
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Pumpkin Carving for K-2 Students
Students carve pumpkins, draw pictures and label layers of a seed, and write steps needed to carve pumpkin.
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Rock Hunters
Students observe rocks of various types and sizes and record these observations through drawings. They gather rocks, measure, classify, observe, describe and record their collection.
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Estimate on a Number Line
Using a number line worksheet, learners solve seven different problems using the shown number line in each. They estimate what number is selected on the number line in each problem and write it out.
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Estimating Units of Length Word Problems
Which unit of measurement would you use? As your scholars begin to understand measuring, it's important they become familiar with the various units. They examine five object images and match them to one of five units: meters,...
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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...
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Counting (Up to 120)
These five sets of objects provide a counting challenge for learners: will they discover strategies to make their job easier? Each array has between 44 and 95 objects in rows. Have learners do the first one, then review their strategies....
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Homework: Simple Rounding to 10
In this simple rounding worksheet, students solve 12 different problems that include rounding to the nearest ten in each. First, they write the ten nearest to the number on a number line. Then, students identify the number in each box...
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Life is Full of Problems
Pupils use the problem solving strategy of guess and check to investigate math word problems. They determine which problem solving strategy or strategies would work best in problem situations.
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Estimate then Measure the Angle #4
In this angles activity, students estimate angles to within 15 degrees, then measure and name each. A reference web site is given for additional activities.
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Pan Balance: Shapes
Students explore the concept of equivalence as it relates to comparing concrete objects to determine greater or lesser attributes such as length and weight. In this pan balance-shapes instructional activity, students make estimations...
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Estimate, Measure, and Record
Have your class explore measuring with this worksheet. Learners measure items and record their results in centimeters and millimeters. There are ten different items to measure.
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Counting Blood Cells
Students observe number sense by participating in an estimation activity. For this blood cells lesson, students identify the importance of blood cells in the human body and discuss how tiny they are. Students utilize paper dots as a...
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Limit Estimation
In this pre-calculus worksheet, students estimate the limit of trig functions and rational functions as x approaches a number. There are 4 questions.
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Estimation
Students complete computer activities about estimating if items are more or less than a given amount. For this estimation lesson plan, students also estimate measurements around the classroom.
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Estimating Percents
In this math instructional activity, students complete 25 problems where they estimate the percentage of shaded figures, fractions of a whole, and by solving word problems which use percents.
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Estimating With Decimals
In this math learning exercise, students complete 14 problems where they estimate money amounts and multiplication products using numbers with decimals. Examples are provided in this well-designed learning exercise.
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Subtracting Using Estimation
Third graders play the game, "Who Wants To Be A Millionaire?" while subtracting using estimation. I really like the format of this fun game, which utilizes the lifelines and strategies found in the real game on television.
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Estimation and Computation
Second graders practice their estimation skills using blocks. In this math lesson, 2nd graders explain how estimating makes addition easier. They complete a worksheet after the lesson to reinforce new learning.
Pennsylvania Department of Education
Fractions and Ribbons
Fifth graders solve division problems using partial quotients. In this long division lesson, 5th graders practice seeing division as a process of repeated subtraction and estimation. This lesson provides a script for the teacher.