Curated OER
Questioning NASA
Space science and math collide in this inquiry that investigates launching times for antacid-tablet rockets! Upper elementary or middle school learners collect data as they launch these mini rockets. They apply concepts of place value...
Illustrative Mathematics
Calculations with Sine and Cosine
Practice makes perfect and perfecting those trigonometric functions are vital in trigonometry. The task requires evaluating cosine and sine values at common degree measures before looking at the results. Is there a pattern when the...
Math Mammoth
Mental Math in Percent Problems
In this math worksheet, students are given 21 percentage problems which they are to work out mentally. There are story problems, tables and simple conversion.
Alabama Learning Exchange
Jelly Beans Add Up
Students explore counting, sorting, and graphing skills. For this data analysis lesson, students sort jelly beans by color, count the jelly beans, and create a bar graph of the jelly beans according to color.
Curated OER
ADULT ESOL LESSON PLAN--Concepts of Time and Money
Pupils identify different denominations of United States currency and symbols associated with money and reading prices. In addition, in pairs they identify examples of currency from newspapers and magazines.
Curated OER
Cigarette Smoking
Learners analyze the monetary cost associated with smoking cigarettes. They calculate the life expectancy associated with how many cigarettes are smoked a day. They complete story problems as well.
Curated OER
How Much Is On The Floor?
Students estimate the number of items in a group. In this estimation lesson, students are presented with random objects to clean up. Students estimate how many items are present and then compare the actual number of items to their...
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...
Curated OER
Earthquake Plotting
Students become familiar with map coordinates. They establish the frequency of earthquake occurrences and study the location and magnitude of earthquakes. To establish the location of plate boundaries.
Curated OER
Jobs and Salaries
In this economics worksheet, students look for the budgets and go through the practical activities of maintaining a monthly expense sheet.
PBS
Pbs Learning Media: Rounding: Cyberchase Games
In this interactive activity, discover how rounding off numbers helps you estimate faster.
CK-12 Foundation
Ck 12: Arithmetic: Product Estimation With Mixed Numbers/fractions
[Free Registration/Login may be required to access all resource tools.] Estimate products and quotients of fractions and mixed numbers.
Illustrative Mathematics
Illustrative Mathematics: 3.nbt, 4.nbt Rounding to the Nearest 100 and 1000
This task builds off of the skill of rounding to the nearest ten and hundred in third grade. Aligns with CCSS.Math.Content.3.NBT.A.1 Use place value understanding to round whole numbers to the nearest 10 or 100.
Simon Fraser University
Chem1 Virtual Textbook: Significant Figures and Rounding Off
As part of a larger site called "Getting started in Chemistry," this site examines significant figures and claims to teach the user "how to avoid telling lies with numbers."
University of California
University of Calilfornia: Significant Figures Ii
This site from the University of California provides a lengthy and intelligent discussion of sig figs, absolute and relative precision, accuracy, precision in calculations, rounding off, and the whole shooting match of how we report what...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.