Pennsylvania Department of Education
Round Numbers to Nearest Ten or Hundred
Third graders review telling time. In this lesson on telling time, 3rd graders discuss various items that show length of time, including clocks, calendars and sand timers. Students review and practice what they already know about telling...
Pennsylvania Department of Education
Adding Common Fractions
Fourth graders estimate various measurements. In this activity on measurement, 4th graders estimate the length and mass of multiple objects. Students discuss the difference between a guess and a reasonable estimate and discuss using...
Curated OER
Metrics
Students discover the need for a universal measurement system. They practice using basic metric units in measuring distance and weight.
Curated OER
Castles
Students create a scale model to a castle using the dimensions they were given. They calculate the surface areas and volumes of each section of their castle.
Curated OER
Ohio Census 1990 & 2000
Students use Ohio census data to solve problems, make comparisons, draw conclusions, and support predictions related to Ohio's population. They interpret and work with pictures, numbers and symbolic information.
Curated OER
Eating on a Budget
Students are "given" $25.00 to spend at a restaurant. Using the Internet, they must "order" a complete 4 course meal while staying within their budget.
Curated OER
Graphing the Daily Revenue of Miami Seaquarium
Seventh graders compile a table of the revenues of the 8 eateries (a combined total), Main Gate admissions, and the Gift Shop.
Curated OER
Pythagorean Theorem Investigation
Eighth graders investigate the Pythagorean Theorem and practice applying the theorem to various triangles. Finally, in the next lesson in the sequence, 8th graders create a song or a story to help them remember the Pythagorean Theorem.
Curated OER
Calculating the Shortest Distance Between Two Points
Ninth graders calculate the distance between two points.
Curated OER
Black Bayou Lake Measures Up
Learners, in groups, estimate measurments and then select the tools needed and measure various items at Black Bayou Lake refuge.
Curated OER
Marshmallows
Third graders estimate the volume and mass of one marshmallow using appropriate standard units. They design and carry out an investigation to find the average of volume/mass of one marshmallow.
Curated OER
Look at Those Leaves!
Students observe and sort tree leaves. In this plant biology lesson, students observe various types of leaves and identify the characteristics of each leaf. Students measure and sort leaves according to size and color.
Curated OER
See the State
Fourth graders are given a map of Indiana and have to plan a road trip including at least two major points of interest with 100% accuracy. The students estimate the distance between their two chosen locations with 100% accuracy.
Curated OER
Ohio Census 1990 and 2000
Students explore the Ohio census numbers in 1990 and 2000. In this social studies instructional activity, students use the census data to answer questions.
Curated OER
LEGO Balance
Students design and build a balance using LEGO, string, and a set of standard metric weights.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Estimating Quotients
This is a question about the best way to estimate the answer to a division problem. The answer offers a basic definition of estimation, along with several methods and the positive and negative aspects of each.
AAA Math
Aaa Math: Addition Using Estimation
This site explains how to estimate sums by rounding whole numbers. Games and exercises are provided to practice the skill.
AAA Math
Aaa Math: Front End Estimation of Sums
Students can practice estimating sums using front-end estimation in a series of self-check exercises and timed learning games.
AAA Math
Aaa Math: Rounding to the Nearest Ten Thousand
This site offers exercises and games for students to practice rounding whole numbers to the nearest ten thousand.
ABCya
Ab Cya: Estimating
Soccer Math: Estimating is a fun way for kids to practice estimating sums, differences, products and quotients. There are different levels of difficulty in each exercise making the game appropriate for a variety of students and grades....
AAA Math
Aaa Math: Estimation
Improve your estimation and rounding skills with these interactive games that are challenging and fun. Excellent skills practice for rounding, estimating sums and differences, and front-end estimation. Links to lesson plans, teacher...
AAA Math
Aaa Math: Subtraction Using Estimation
This site explains how to estimate differences by rounding. Games and exercises are provided to practice the skill.
AAA Math
Aaa Math: Estimating a Sum
Students can practice estimating sums to the nearest thousand in a series of self-check exercises and timed learning games.
AAA Math
Aaa Math: Estimating a Difference
Students can practice estimating differences in a series of self-check exercises and timed learning games.