Keywords: Estimation (309)

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Angle Measurer
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Angle Measurer

This Flash applet gives students practice in creating an angle measuring between ... (more)

This Flash applet gives students practice in creating an angle measuring between zero and 180 degrees. Two buttons control the increase or decrease of the opening between two rays. Points are awarded for accuracy. (less)

Subject:
Mathematics
Education
Material Type:
Activities and Labs
Instructional Material
Interactive
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Angles
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Angles

This interactive Flash applet enables students, using estimation and measurement skills, to ... (more)

This interactive Flash applet enables students, using estimation and measurement skills, to investigate angles. Teachers can use this page for demonstrating how to read a protractor, and the protractor can be hidden to give students practice in estimating angle measures. The size of the angle can be controlled or chosen randomly. (less)

Subject:
Mathematics
Education
Material Type:
Activities and Labs
Instructional Material
Interactive
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Author:
Dan Bunker
Angles
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Angles

This set of eight interactive activities lets the user explore angles from ... (more)

This set of eight interactive activities lets the user explore angles from many different perspectives. Activities include (1) visualizing the size of an angle; (2) examining objects that will stand or fall with right and non-right angles; (3) identifying obtuse, right, acute and straight angles; (4) guessing angle measures with different levels of precision; (5) exploring regular shapes and their angle measures; (6) studying angles in a fractal tree that is drawn with user inputs of the same angle measure between the branches at each stage; (7) exploring angle measures through firing a cannon (8) drawing with a <i>Logo</i> activity. (less)

Subject:
Mathematics
Engineering
Education
Material Type:
Activities and Labs
Games
Instructional Material
Interactive
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Author:
Jo Edkins
Animal Bytes
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Animal Bytes

This browsable database is designed to help learners quickly find information about ... (more)

This browsable database is designed to help learners quickly find information about some of the creatures found in the animal kingdom. Most species' records include scientific classification, basic physical traits, fun facts, and conservation/ecological value. (less)

Subject:
Mathematics
Ecology
Forestry and Agriculture
Geoscience
Life Science
Physics
Social Sciences
Education
Material Type:
Data
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
An Apple a Day
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An Apple a Day

In this math lesson, learners make estimates to analyze the number of ... (more)

In this math lesson, learners make estimates to analyze the number of apples per acre, and visualize the magnitude of one million. Using the thematic setting of Johnny Appleseed, learners practice their number sense and estimation skills as they progress from merely guessing the number of apples in a bushel to making a reasonable estimate based on a point of reference or benchmark. Learners use data from the Michigan Apple Growers to compute and analyze the total amount of apple yield per acre. They work at centers to gain experience in visualizing the magnitude of one million apples. Learners also gain experience in using a grid as a resource to make better estimations. (less)

Subject:
Mathematics
Computing and Information
Education
Material Type:
Activities and Labs
Instructional Material
Lesson Plans
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
PBS
US Department of Education
Approximating the area of a unit circle with regular polygons
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Approximating the area of a unit circle with regular polygons

This interactive Java applet illustrates the approximation of the area measure of ... (more)

This interactive Java applet illustrates the approximation of the area measure of a unit circle using inscribed regular polygons. Users can choose the number of sides (3-1000), or have them increased by one at a time. The applet reports the polygonal area to 15 decimal places. (less)

Subject:
Mathematics
Engineering
Education
Material Type:
Instructional Material
Interactive
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Area of a trapezoid. Definition and formula
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Area of a trapezoid. Definition and formula

A web page and interactive applet showing the ways to calculate the ... (more)

A web page and interactive applet showing the ways to calculate the area of a trapezoid. The user can drag the vertices of the trapezoid and the other points change automatically to ensure it remains a trapezoid. A grid inside the shape allows students to estimate the area visually, then check against the actual computed area. The text on the page gives three different ways to calculate the area with a formula for each. The applet uses one of the methods to compute the area in real time, so it changes as the trapezoid is reshaped with the mouse. A companion page is http://www.mathopenref.com/trapezoid.html showing the definition and properties of a trapezoid. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com. (less)

Subject:
Mathematics and Statistics
Material Type:
Readings
Simulations
Provider:
Math Open Reference
Provider Set:
Math Open Reference
Author:
John Page
The Art of Approximation in Science and Engineering: How to Whip Out Answers Quickly
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The Art of Approximation in Science and Engineering: How to Whip Out Answers Quickly

The purpose of this learning video is to show students how to ... (more)

The purpose of this learning video is to show students how to think more freely about math and science problems. Sometimes getting an approximate answer in a much shorter period of time is well worth the time saved. This video explores techniques for making quick, back-of-the-envelope approximations that are not only surprisingly accurate, but are also illuminating for building intuition in understanding science. This video touches upon 10th-grade level Algebra I and first-year high school physics, but the concepts covered (velocity, distance, mass, etc) are basic enough that science-oriented younger students would understand. If desired, teachers may bring in pendula of various lengths, weights to hang, and a stopwatch to measure period. Examples of in- class exercises for between the video segments include: asking students to estimate 29 x 31 without a calculator or paper and pencil; and asking students how close they can get to a black hole without getting sucked in. (less)

Subject:
Mathematics and Statistics
Science and Technology
Material Type:
Video Lectures
Provider:
MIT Learning International Networks Consortium
Provider Set:
MIT Blossoms
Author:
Stephen M. Hou
Ask Dr. Math Elementary Place Value
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Ask Dr. Math Elementary Place Value

This question and answer service for math students and their teachers offers ... (more)

This question and answer service for math students and their teachers offers a searchable archive all about place value at the elementary level. Topics addressed include rounding, estimating, significant digits, and scientific notation. (less)

Subject:
Mathematics
Chemistry
Engineering
Life Science
Education
Material Type:
Reference
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Author:
The Math Forum @ Drexel
Backyard Graphing
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Backyard Graphing

In this math activity, learners will create a scale diagram of their ... (more)

In this math activity, learners will create a scale diagram of their backyard or other outdoor area on graph paper. This activity encourages learners to use models and pictures to relate concepts of ratio, proportion and percentage, as well as to make estimates and comparisons using common units of measurement. (less)

Subject:
Mathematics
Material Type:
Activities and Labs
Instructional Material
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
COSI
The Bakery Shop
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The Bakery Shop

In this fun online game, learners will run their own virtual bakery ... (more)

In this fun online game, learners will run their own virtual bakery in order to recognize that people have many wants, that wants are unlimited, and that resources are scarce. The goal is to enable students to explain how resources can be used in various ways, identify goods and services, and recognize money as the generally accepted medium of exchange for goods and services. (less)

Subject:
Mathematics
Social Sciences
Education
Material Type:
Activities and Labs
Games
Instructional Material
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
Advanced Computing Center for the Arts and Design (ACCAD) at The Ohio State University
COSI
eTech Ohio
Ohio Council on Economic Education
WOSU Public Media
Bang on Time
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Bang on Time

Using this applet students practice reading the time in text form and ... (more)

Using this applet students practice reading the time in text form and stopping an analog clock when it matches that time. Students play ten rounds and score points based on their accuracy. The speed of the clock can be adjusted. (less)

Subject:
Mathematics
Physics
Education
Material Type:
Activities and Labs
Instructional Material
Interactive
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Author:
Mark Cogan
Bark Beetle Infestation Investigation: Estimation and Pheromones
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Bark Beetle Infestation Investigation: Estimation and Pheromones

This activity investigates how bark beetles can threaten forests by having learners ... (more)

This activity investigates how bark beetles can threaten forests by having learners estimate the number of infected trees from a photo. Learners also think about how pheromones could be used to trap the beetles. The activity is written for a kit that can be checked out of a library, but the kit is not necessary. (less)

Subject:
Mathematics
Chemistry
Ecology
Engineering
Forestry and Agriculture
Geoscience
Life Science
Technology
Social Sciences
Education
Material Type:
Activities and Labs
Instructional Material
Lesson Plans
Simulations
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
Camille and Henry Dreyfus Foundation, Inc.
Maisie Shaw
Maria Gomez
Mount Holyoke College
Battleship Numberline
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Battleship Numberline

In this Flash game students estimate the location of fractions, whole numbers, ... (more)

In this Flash game students estimate the location of fractions, whole numbers, and decimals on a number line. The game requires students to place a target on the estimated position of the ship from the value given. Students choose fractions, whole numbers, decimals, or a mixture and after passing the first level are prompted to choose their next level of play. (less)

Subject:
Mathematics
Engineering
Education
Material Type:
Games
Instructional Material
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Author:
PlayPower Foundation
Beating Heart: How Fast Does Your Heart Beat?
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Beating Heart: How Fast Does Your Heart Beat?

This second challenge in the Figure This! set of 80 math challenges ... (more)

This second challenge in the Figure This! set of 80 math challenges asks students to estimate how fast their hearts beat and how long it will take to beat a million and then a billion times. The web page points out the importance of large numbers when determining the distance to Mars or the size of the national debt. The Getting Started link on the top navigation bar leads to a description of how to determine a person's pulse rate. There are also links to a solution hint, the solution itself, and other related math questions. The Did You Know section uses scientific notation as it notes the interesting fact that a billion has different meanings in the United States and in France and Germany. Online and print resources related to large numbers are included. (less)

Subject:
Mathematics and Statistics
Mathematics
Physics
Education
Material Type:
Activities and Labs
Homework and Assignments
Images and Illustrations
Instructional Material
Lesson Plans
Provider:
National Council of Teachers of Mathematics (NCTM)
Ohio State University College of Education and Human Ecology
Provider Set:
Figure This!
Middle School Portal: Math and Science Pathways (MSP2)
Author:
Learning First Alliance
National Action Council for Minorities in Engineering
National Council of Teachers of Mathematics (NCTM)
Widmeyer Communications
Blazing the Trail
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Blazing the Trail

In this math lesson, learners estimate distances between landmarks and use a ... (more)

In this math lesson, learners estimate distances between landmarks and use a map and scales to determine the actual distances. Learners will also use proportional reasoning to measure these distances as depicted on maps. (less)

Subject:
Mathematics
Geoscience
Physics
Social Sciences
Education
Material Type:
Activities and Labs
Instructional Material
Lesson Plans
Provider:
Science and Math Informal Learning Educators (SMILE)
Provider Set:
SMILE Pathway: Science and Math Activities in One Search
Author:
PBS
US Department of Education
Boom Construction
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Boom Construction

Student teams design their own booms (bridges) and engage in a friendly ... (more)

Student teams design their own booms (bridges) and engage in a friendly competition with other teams to test their designs. Each team strives to design a boom that is light, can hold a certain amount of weight, and is affordable to build. Teams are also assessed on how close their design estimations are to the final weight and cost of their boom "construction." This activity teaches students how to simplify the math behind the risk and estimation process that takes place at every engineering firm prior to the bidding phase—when an engineering firm calculates how much money it will take to build the project and then "bids" against other competitors. (less)

Subject:
Mathematics
Engineering
Education
Material Type:
Activities and Labs
Instructional Material
Provider:
TeachEngineering
Author:
AMPS GK-12 Program,
Janet Yowell
Stanislav Roslyakov
TeachEngineering.org