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2000 U.S. National Chemistry Olympiad National Exam - Part I
The National Chemistry Olympiad exams are comprehensive tests covering an entire year of chemistry concepts. You can use them as practice for competing in the challenge, or simply as a review, or as an actual final exam for your general...
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Making Two-Dimensional Shapes
Use this introductory geometry worksheet as a projected warm-up for your class, doing it together and then revealing the explanation on the bottom half. Learners examine a square and a circle, each bisected by a dotted line. They must...
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Math in Science-Radioactive Decay and Half-Life
In this radioactive decay and half-life worksheet, students use given half-lifes to calculate the amount of time it will take for certain amounts of elements to decay. They also find the age of samples and determine how many grams of...
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Modeling Halves and Thirds (A)
In this identifying halves and thirds instructional activity, students observe a model of the shaded part as one third and use it to write halves and thirds fractions for other models. Students solve nine problems.
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Modeling Halves (A)
In this recognizing halves of objects worksheet, learners view a model showing one shaded part out of two, and write the fraction describing other models. Students solve 6 problems.
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Halves of Shapes
In this halves of shapes activity, students shade in a half of each of the nine geometric shapes drawn on the page by splitting it into two equal parts.
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Fractions: Halves and Quarters of Shapes
In this fractions-halves and quarters of shapes worksheet, students shade in a half or a quarter of each of the 6 different shapes.
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China's Three Gorges Dam
A very well-done resource includes an informational reading passage describing the controversy and impact of China's Three Gorges Dam. It also includes eight guided reading questions, a pros/cons arguments chart, and a creative writing...
Illustrative Mathematics
Voting for Two, Variation 4
After elections, the total amount of votes is not specified but the ratio of votes is. Your learners' job is to determine the fraction of votes John received above half of all votes. The problem can be solved abstractly or by other...
It's About Time
Special Relativity
According to Einstein's Theory of Special Relativity, time moves slower when you're working. That's not quite what it says, and in a hands-on lesson, pupils learn the actual theory. Scholars plot the half life of muons, then compare it...
Rational Number Project
Rational Number Project: Initial Fraction Ideas
Deepen the fractional number sense of young learners with this introductory lesson on equivalent fractions. After completing a short warm-up activity, children go on to work in pairs using fraction circles to complete a table of...
National Security Agency
Go One-on-One with Decimals
Shoot and score with three basketball-themed lessons about decimals. Young mathematicians compare game statistics, make trash can hoops, and play a data spinner game to practice identifying digits and values within decimal numbers.
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Factors of Numbers from 1 to 30
Finding factors is an integral skill on the road to fractions and algebra. Scholars write down a factor list for nine numbers up to 30. Next, they examine provided lists and circle the numbers that are factors of eight more numbers, also...
K-5 Math Teaching Resources
24 Hour Number Line
Learning to calculate elapsed time can be a struggle for young mathematicians. Help your class overcome this hurdle in their learning with these simple 24-hour number lines that start at 12 midnight, pass through 12 noon, and finally end...
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1984 - Part Two
Focus on the second half of George Orwell's 1984 with this reading comprehension quiz. All multiple-choice, the questions center on major events in the novel.
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Fractions and Halves
Fourth graders examine halves of a whole and discover through activities that they must be exactly equal in size. Working with Geoboards and Dot-Paper Squares, the class practices finding halves that are both congruent and incongruent.
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Learning About One-Half
In this learning about one-half worksheet, students discover that two equal parts are halves. Students then color the halves of 15 shapes to show they understand the concept.
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Dividing into Two Parts — Halves
In this fractions learning exercise, students divide pictures into halves to introduce them to fractions. Students complete 3 sets of problems.
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Finding half
Studentts comprehend how to find half of an object. They divide groups of items in half and students complete a worksheet on halves. Students read "Jump, Kangaroo, Jump! as an introduction to fractions. They watch as the teacher writes...
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Get a Half-life!
Students explore decay functions and the half-life of a substance. Through an M&M activity with calculators, students collect and graph data. They determine the linear, quadratic and exponential functions of the graph. Students...
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Finding Half-Word Problems
In this finding one-half worksheet, students complete a set of 10 word problems, finding one-half of given sets of objects. A reference web site is given for additional activities.
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Half-Life
In this half-life activity, students are guided through the steps of solving radioactive decay problems. They solve nine problems finding rates of decay, half-life and quantities of substances remaining after given amounts of time.
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Working with Half-Life
In this half-life learning exercise, students use a given table of half lives, mass, time and amount of original sample to solve for unknowns in nine given half-life problems.
Province of Nova Scotia
Fraction Strips
How can you tell how many thirds are in a whole? Or twelfths? Use a fraction strips worksheet to visualize how many parts are in one whole.
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