Curated OER
Rounding Up or Down?
For this rounding worksheet, students fill in columns, rounding given numbers both up and down; the correct answer is given in a 3rd column. A reference web site is given for additional activities.
Math Doctor
Chapter 5: Decimal Notation
Explore all things decimal in this thorough series of introduction activities. Including scripting for the teacher and detailed descriptions and examples, the plan begins by reviewing the basics of place value and writing fractions as...
EngageNY
Rational Exponents—What are 2^1/2 and 2^1/3?
Are you rooting for your high schoolers to learn about rational exponents? In the third installment of a 35-part module, pupils first learn the meaning of 2^(1/n) by estimating values on the graph of y = 2^x and by using algebraic...
Illustrative Mathematics
How Many Cells Are in the Human Body?
Investigating the large numbers of science is the task in a simple but deep activity. Given a one-sentence problem set-up and some basic assumptions, the class sets off on an open-ended investigation that really gives some context to all...
Balanced Assessment
Sales Tax Table
Sales tax rates vary; do the math to find the right rate! Pupils use before tax amounts and after tax amounts to determine the tax rate. Rounding makes the task challenging.
Teach Engineering
About Accuracy and Approximation
How accurate are robots? Groups draw lines by moving robots backwards and forwards by one rotation of the wheels. Using the appropriate formula, they determine the percent error in the length of the lines in relation to the calculated...
EngageNY
Square Roots
Investigate the relationship between irrational roots and a number line with a resource that asks learners to put together a number line using radical intervals rather than integers. A great progression, they build on their understanding...
Curated OER
Everyday Mathematics: Ballpark Estimates
In this estimating practice worksheet, students sharpen their math skills as they learn how to make likely estimates and try the 2 extra practice activities.
Curated OER
Estimating 0-10
In this estimating worksheet, students estimate the whole numbers that arrows on a number line are pointing to, 0-10. A website reference for additional activities is given.
Curated OER
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.
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
Round Each Number to the Nearest Ten
In this rounding instructional activity, learners practice rounding numbers to the nearest ten. There are 8 numbers that students round. The answers are included at the bottom half of the page.
Curated OER
Estimating Activity
For this estimating worksheet, students estimate numbers of items in pictures, checking the box they determine has the closest number. A reference website for additional resources is given.
Curated OER
Mystery Stars: Estimating Whole Numbers Using Fractions Shown on Sectors of a Circle
In this set of fraction worksheets, pupils cut out 6 pages of circles that show fractions with stars covering different sections of circles. They show one section of the circle in order to estimate the whole number of stars by looking at...
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.
Curated OER
Round Each Number to the Nearest Thousand
In this rounding off instructional activity, students round off eight four-digit whole numbers to the nearest thousand. Students write their answers on the instructional activity.
Curated OER
Robot Rounding!
Young scholars collect data on a robot and relate the behavior to prove there is an infinite minute set of numbers. In this algebra lesson plan, students verify that there is always a number between two numbers. They analyze and make...
Curated OER
Math Skills Review
For this math skills review worksheet, students solve 20 problems which pertain to place value, metric length conversions, placement of numbers on a number line and rounding to the nearest ten or hundred. This is intended as an online...
Curated OER
Math Review
In this math skills review worksheet, students solve 45 problems pertaining to inequalities, positive and negative integers, Roman numerals and coordinate pairs. This page is intended as an online activity, but may be completed on paper.
Curated OER
Paper Airplane Activity
Ninth graders select and build one of five different paper airplane designs and test them for distance and for time aloft. Part of this activity is designed to explore NASA developed software, FoilSim, with respect to the lift of an...
EngageNY
Sampling Variability
Work it out — find the average time clients spend at a gym. Pupils use a table of random digits to collect a sample of times fitness buffs are working out. The scholars use their random sample to calculate an estimate of the mean of the...
Curated OER
How Close Can You Get? Estimating
Students work collaboratively to determine how many crackers are in a large container. They then view a video to see how often people use estimation in their jobs, and another video to watch students work on figuring out appropriate...
Curated OER
Estimating the Square- Root of Ten
In this algebra worksheet, learners estimate the square root. They rewrite the root as an exponential function and solve. They use the correct function notation. There are 10 questions.