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University of Waterloo (Canada)
Centre for Education in Mathematics and Computing: Ratio and Rate [Pdf]
Learners explore the concepts of rate and ratio in a variety of problem-solving situations. Worksheets contain definitions and visual representations of concepts. Link to related ratio game. Other skills include measurement, data...
Mathigon
Mathigon: Mathematical Treasure Hunt
The mathematical treasure hunt allows young scholars to follow a trail of clues and mathematical problems around the school site; each clue contains a hint to where the next clue is hidden.
Illustrative Mathematics
Illustrative Mathematics: Pencil and a Sticker
The following problem is posed to the class: A pencil costs 59 cents, and a sticker costs 20 cents less. How much do a pencil and a sticker cost together? The solution with explanation is included on this site.
Math Cats
Math Cats: Math Cats Balance
Use this interactive activity to learn about weights, balance and basic mathematics. With problem solving and math skills solve the questions about how many objects will balance out on the interactive scales.
Better Lesson
Better Lesson: The Recipe for a Great Word Problem
The big idea of this lesson is to have students write their own word problems to help them have a better understanding of mathematical operations, as they relate to real world scenarios.
Writing Fix
Writing Fix: Ace: Writing Mathematics [Pdf]
In this graphic organizer, steps for solving word problems are included. Questions for students to ask themselves for what to do to "answer" [A], "computer" [C], "check" [C], and "explain" [E] are included. [Requires Adobe Reader.]
Purple Math
Purplemath: Translating Word Problems: Key Words
Use this lesson to get a clear explanation of how to translate word problems into mathematical equations. Included is a table for common phrases and their mathematical symbols. Use the examples as guides for working on your own problems....
University of Nottingham
Mathematics Assessment Project: Modeling Population Growth: Having Kittens
This activity unit guides students in developing strategies for modeling problems. The task focuses on investigating a cat shelter's claims about the rate of cat population growth. The unit includes a full lesson plan, examples of...
Success Link
Success Link: Exploring Limits and Recursive Sequences
A well laid-out lesson plan that uses a classroom simulation to show the medicine level in the body over a period of time. Students track on a chart the process of intake/elimination and problem solve what happens to the medicine over time.
National Council of Teachers of Mathematics
The Math Forum: Suzanne Alejandre: Pirate Diamond Activity
An interesting small-group activity that will engage middle schoolers in problem solving, reasoning, and communicating their mathematical thoughts with eachother. The materials needed for the project and the steps the teacher should...
Illustrative Mathematics
Illustrative Mathematics: 1.oa \$20 Dot Map
In this lesson plan, 1st graders are given a graphic of a map and are to use addition and subtraction to solve the word problem.
Illustrative Mathematics
Illustrative Mathematics: The Napping House
The teacher reads "The Napping House" to the class, stopping each time a person or animal gets into the bed so the students can add a counter to the ten-frame. Ten-Frame printable is included.
Alabama Learning Exchange
Alex: Similar Figure Activity
The purpose of this lesson is to allow students to self-discover the relationships between similar figures. The students should then take what they learn about these relationships and apply these concepts to problem-solving.
Shmoop University
Shmoop: Ratios & Percentages: Solving Proportions
Students learn how to solve proportions. The mathematics resource consists of examples and practice problems with answers.
Technovation
Curiosity Machine: Challenges: Design a Mechanical Pegboard
Are you ready to challenge yourself to make a peg board that lets you test multiple linkage systems and movements? This site contains not only the challenge but a platform to document your process as you solve the problem.
Technovation
Curiosity Machine: Challenges: Make a Root System
Inspire students to make a root system to help a plant stay put with simple materials like pipe cleaners, string, and marbles. This STEM challenge allows students to not only solve a problem but get tips and document their process all on...
Sophia Learning
Sophia: Graphing Inverse Variation Functions
This learning tutorial about how to graph inverse variation functions combines videos, a PowerPoint presentation, and helpful hints. The videos demonstrate how to solve example problems and the PowerPoint presentation provides some key...
Other
Helping With math.com: Ratios and Unit Rates
This site contains a lesson about ratios and unit rates as well as guided and independent practice for learners to review the skills.
Annenberg Foundation
Annenberg Learner: Math in Daily Life
Read about what math has to do with cooking, chances of winning a game, even decorating your home. Teachers may want to peruse this site for ideas about real world applications in their lesson planning.
Cosmo Learning
Cosmo Learning: Computational Science and Engineering I
A collection of video lectures from a course reviewing linear algebra with applications to networks, structures, and estimation. Webpage includes thirty-six lectures from a professor at Massachusetts Institute of Technology. Lectures...
Other
Teachers Choice: Simplifying Expressions
Learn about simplifying algebraic expressions at this complete "how to" website. Detailed descriptions with examples and a downloadable file that let's you practice your skills.
Can Teach
Can Teach: Target: An Equations Game
Using decks of cards and knowledge of number operations, students develop multi-step equations to reach a target number.