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Lesson Plan
Curated OER

To Half or Half Not

For Teachers 4th - 5th
Jump into equivalent fractions using these fun scenarios for mathematicians to solve. First, they use geoboards to find different ways to divide a rectangle in half. Then, an alien from the planet Fractional is after one half of their...
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Worksheet
Curated OER

Finding a Half on a Number Line

For Students 2nd - 4th Standards
Introduce your math class to fractions with this worksheet. Six number lines are provided, and learners must fill in the missing numbers. Some blanks are whole numbers, and some are half numbers. Numbers up to 48 are shown.
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Lesson Plan
Illustrative Mathematics

Dividing by One-Half

For Teachers 4th - 6th Standards
Understanding when to divide by two or one-half can be confusing. Here is an activity that gives four different scenarios. It is up to your number crunchers to decide if they divide by two or one-half. The easiest way to approach the...
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Lesson Plan
Curated OER

Locating Fractions Greater than One on the Number Line

For Teachers 3rd - 5th Standards
Supplement your lesson plan on improper fractions with this simple resource. Working on number lines labeled with whole numbers between 0 and 5, young mathematicians represent basic improper fractions with halves and thirds. The...
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Lesson Plan
Curated OER

Teaching Radioactive Decay: Radioactive Half-life And Dating Techniques

For Teachers 9th - 12th
Students generate a radioactive decay table for an imaginary element using a box filled with pinto beans and M&M's. They use their data to plot a decay graph, develop the concept of half-life, and use the graph to "age" several samples.
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Lesson Plan
Curated OER

Linear Inequalities in One and Two Variables: Rays and Half Planes

For Teachers 9th - 12th Standards
Define rays and half planes, including the concepts of boundary lines and prerequisite knowledge of coordinate planes. Given linear inequalities in one and two variables, your class will compare the differences. They will also graph...
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Lesson Plan
Curated OER

"Pizza"rama With Fractions!!

For Teachers 3rd
Young mathematicians explore number values by utilizing food as a visual aide. They discuss the differences between halves, fourths, and eighths and how they are visually represented by a pizza. Then create their own pizza in class and...
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Worksheet
Curated OER

Line of Symmetry

For Students 3rd - 4th Standards
Where is the line of symmetry in these shapes? Review this concept using the visual guide at the top of the page, explaining how some shapes have multiples lines. Consider demonstrating this concept with large cut-outs, physically...
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Worksheet
Curated OER

Number Wall

For Students 2nd - 3rd Standards
Use the number wall to practice addition, evens and odds, missing addends, and doubling. Learners answer various questions based on six numbers, filling in squares with digits. They list the odd numbers and total them, then list the even...
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Lesson Plan
Illustrative Mathematics

Half of a Recipe

For Teachers 4th - 6th Standards
Kids love to cook! What is a better place to learn mixed numbers than with a recipe? It is up to learners to decide how they want to divide this recipe in half. They may choose to model the mixed number and then divide the model by two....
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Worksheet
Curated OER

Math in Science-Radioactive Decay and Half-Life

For Students 9th - 11th
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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PPT
Curated OER

Equivalent to a Half

For Teachers 3rd - 4th
How can fractions that look different be considered equivalent? Answer that questions with this informative and easy to follow resource. Fractions are shown in numeric and picture form to reinforce how the are equivalent. The process for...
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Worksheet
Curated OER

Making Two-Dimensional Shapes- Matching Worksheet

For Students 1st - 3rd
Now that your learners recognize two-dimensional shapes, can they find what each half of those shapes would look like? There are seven shapes on this worksheet, bisected by a dotted line. Scholars examine these shapes and match them to a...
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PPT
Curated OER

Finding Quarters

For Teachers 2nd - 3rd
How do you find a quarter of a given number? The class will see how easy it can be, as they first find 1/2 of a given set of numbers. They are then encouraged to find 1/2 again, which of course is 1/4. A great strategy for learners just...
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Lesson Plan
Curated OER

Finding half

For Teachers 3rd
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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Worksheet
Curated OER

Dividing into Two Parts — Halves

For Students 2nd - 3rd
In this fractions worksheet, students divide pictures into halves to introduce them to fractions. Students complete 3 sets of problems.
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Lesson Plan
Curated OER

Fractions and Halves

For Teachers 4th
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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Interactive
CK-12 Foundation

Finding Exact Trigonometric Values Using Double Angle Identities: Trig Values Using Double and Half Angle Formulas

For Students 10th - 12th
The more you know, the more you can learn. Scholars apply the double angle and half angle formulas to determine trig values based on known values. They use an interactive that provides sine and cosine values to aid calculations.
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Worksheet
Curated OER

Half-Life

For Students 9th - 12th
In this half-life worksheet, 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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Worksheet
Curated OER

Half-Life Problems

For Students 9th - 12th
In this half-life worksheet, students calculate the half-life of isotopes, they find masses of isotopes remaining after specified times, and they find particular amounts of time needed to pass for given masses of isotopes to decay.
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Worksheet
Curated OER

Finding a Half on a Number Line

For Students 3rd - 4th
For this 1/2 worksheet, students fill in missing numbers on a number line, finding halves. A reference web site is given for additional activities.
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Worksheet
Curated OER

Making Two-Dimensional Shapes

For Students K - 1st
Find the shapes that fit. Pupils explore visual discrimination in a set of geometry worksheets, which has them examine shapes that have been divided in half. They observe a set of shapes to determine which of them would fit into each...
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Assessment
Curated OER

2000 U.S. National Chemistry Olympiad National Exam - Part I

For Students 9th - 12th
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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Lesson Plan
Curated OER

Face Study: Draw the Other Half

For Teachers 4th - 6th
Build fine motor, spatial, and drawing skills by having the class complete the other half of a portrait. They choose an image of a face from a magazine, then attempt to draw the other half of the face as accurately as they can. Two book...