This blog page offers more than 25 activities and games that use a Hundred Chart to develop students' skills and concepts in a variety of math topics: basic operations, number sense, patterns, number theory, fractions, decimals, and logic. The suggestions include links to materials and to other websites.

This Java applet game promotes mental math and strategic thinking skills using a card from Suntex's 24 Game. The player is presented with four numbers (1-9) on a card. The goal is to manipulate each of the four numbers only once so that the end result is 24. Addition, subtraction, multiplication, division and/or parentheses maybe used and the player must be able to enter the expression using the online calculator.

This interactive Flash applet provides a Concentration-type game (called pelmanism in the UK) in which students must discern the properties of three-dimensional solids and their colors in order to match them in pairs. Spheres, cones, prisms and other standard 3-D shapes are hidden face down on cards. Time and number of trials needed to solve are recorded.

Build your own polygon and transform it in the Cartesian coordinate system. Experiment with reflections across any line, revolving around any line (which yields a 3-D image), rotations about any point, and translations in any direction.

A+ Click is an interactive collection of more than 3700 math problems and answers for K-1 K-12 school program. It defines the personal level of math knowledge. You move up into the next level if you give 5 correct answers in a row. Practice makes perfect.

This activity lets you program your 'robot' (a willing friend) to pick up and dispose of some 'toxic waste' using as few commands as possible. Learners create command cards (Turn Left, Right, Forward 1, etc.), mark out a simulation area on the floor, and try to get the "robot" to dispose of something that serves as "toxic waste" into something that serves as a "containment vessel" - in as few steps as possible. Strategy, predication and cooperation are all part of this activity.

In this game, learners strategize to be the first player to make three in a row. This game is similar to the classic Tic-Tac-Toe game, but learners slide game pieces along lines, instead of filling in boxes with X's or O's. Learners will practice mathematical thinking skills like strategizing, predicting and problem solving. This activity guide contains sample questions to ask, literary connections, extensions, and alignment to local and national standards.

In this outdoor game, learners play the roles of gray or red squirrels gathering and storing a supply of food in "fall" and recovering enough of them to survive the "winter." Learners carry bags representing their cheek pouches for carrying food. Learners investigate the advantages and disadvantages of how these two kinds of squirrels store food differently.

This activity (on pages 21-32 of PDF) has learners act out several classic brain teasers. Instead of moving checkers or pennies around on a table, learners play the role of the different pieces of the puzzle, and have to move themselves around. The lesson plan includes printable pictures of different characters than can be worn by the learners. Answers to the puzzles are provided so the facilitator can guide learners towards the solution.

Choose one of N doors to experimentally determine the odds of winning the grand prize behind one of the doors, as in the TV program "Let's Make a Deal." Parameters: Number of doors, number of trials, staying or switching between the two remaining doors.

Agriculture in the Classroom (AITC) is a program supported by the United States Department of Agriculture to promote increased agricultural literacy. The AITC website provides resources for teachers including suggestions for science fair projects, virtual tours, agricultural literacy quizzes, effective teaching strategies. There is also a directory of reviewed resources, including lesson plans, webquests, DVDs, maps, posters, and other items. The student's page features an interactive presentation with career information, ideas for science fair projects, opinion features on agricultural issues, games, webquests, and an interactive map with links to downloadable fact sheets about agriculture in each state.

Students play a generalized version of connect four, gaining the chance to place a piece on the board by solving an algebraic equation. Parameters: Level of difficulty of equations to solve and type of problem. Algebra Four is one of the Interactivate assessment games.

Algebra One on One is a shareware educational game that teaches users about algebra. Game or practice options are available to test knowledge of the 21 functions covered. Different educational levels, including a help system for beginners, are available.

This site explores the formation of stars and planets and the quest for a habitable planet. Create a virtual a community of microorganisms. Try to build the perfect solar system. See how planets react with one another, and how some planets help keep our solar system stable. Look at images: see if you can recognize life.

In this online activity, learners role-play as medics, treating a patient with missing organs. Learners select different organs, then drag them into the proper location in the patient's body. System by system, they put the patient back together. When learners set up a free account at Kinetic City, they can answer bonus questions at the end of the activity as a quick assessment. As a larger assessment, learners can complete the Smart Attack game after they've completed several activities.

In this game, learners strategize to win the most cards by building number equations. Learners practice operations (addition, subtraction, multiplication, and division) to construct their equations. This activity guide contains sample questions to ask, literary connections, extensions, and alignment to local and national standards.

In this creative roleplay activity, learners will explore the various processes of the water cycle using movement, sound, and props to aid in comprehension. Learners will understand that water changes forms throughout the water cycle, and that this cycle runs continuously throughout all the cycles at the same time. This standards-based lesson, which is great for the classroom, camps, or afterschool programs, includes roleplay cards and ideas for props.

Farming ants might sound like a crazy thing to do unless you might like to eat chocolate covered ants. It turns out we can learn a lot from ants and the best way is to build your own ant farm.

This game is a part of the Tau Pack of the Kinetic City site (see description below). In this simulation, the patient's bodies are filled with bacteria. The object is to cure as many patients as possible. Learning concepts enforced here are that antibiotics are specific for the type of bacteria they treat, their strength, and that the bacteria may also become resistant to the bacteria by mutations.KINETIC CITY DESCRIPTION: "Kinetic City" (www.kineticcity.com) is a fun, Web-based after-school science club for kids, ages 8 through 11. It combines exciting online animations and activities with boxes of hands-on science experiments. Children earn "Kinetic City" power points and collect stickers as they complete missions and learn standards-based science content. Here's how it works: The "Kinetic City" super crew (Keisha, Curtis, Megan and Max) needs the help of Earth kids to save their planet Vearth, from the science-distorting computer virus Deep Delete. Each of Deep Delete's 60 hideous strains attacks a different area of science with disastrous consequences. After each attack, teams of Earth kids fight back by viewing a short online animation describing the situation on Vearth; performing a series of activities to re-learn the lost science and going on a mission to Vearth during which they answer science questions and gobble up Deep Delete viruses. Their scores appear on their own Kinetic City Club Web page. "Kinetic City" is produced by the American Association for the Advancement of Science (AAAS), with a grant from the National Science Foundation. AAAS writes the "Project 2061 Benchmarks for Science Literacy," which forms the basis of most state science standards.

In this jigsaw-method activity on subduction zone volcanism, students apply lessons learned from four historic eruptions to the volcanic hazards associated with Mt. Rainier in the Pacific Northwest.

Students play a generalized version of connect four, gaining the chance to place a piece on the board by answering arithmetic questions (addition, subtraction, multiplication, division). Parameters: time, difficulty level, types of questions. Arithmetic Four is one of the Interactivate assessment games.

This Sketchpad activity, which opens on Geometer's Sketchpad and on iOS with Sketchbook Explorer (cataloged separately), promotes logical reasoning skills and informally introduces the concept of sets. Student create Venn diagrams by arranging two or three different colored circles and placing given numbers in them to produce target sums. Sketchpad generates random challenges for the students, or they can create their own problems to share. The resource provides a movie with detailed instructions and downloadable PDFs: teacher notes and a student worksheet.

In this Biodiversity Counts activity, students use their arthropod knowledge to create and play a classroom Jeopardy-style game. The printable five-page PDF handout includes a series of inquiry-based questions to help students identify what they already know about arthropods and step-by-step directions for developing Jeopardy-style quiz questions.

This activity explores what it means for a computer to be intelligent and introduces the topic of what a computer program is and how everything computers do simply involves following instructions written by (creative) computer programmers. Learners interact with a piece of paper that contains rules for playing a perfect game of noughts-and-crosses (tic-tac-toe). The activity contains some thought provoking (and humorous) discussion questions. Explanation, variations, extensions, and resources are included in the PDF.

In this online activity about anatomy, learners will drag and drop pieces of the heart into their proper positions and explore what function each part of the heart has. This activity is part of a rather extensive collection of activities and information surrounding the wonder of the human heart.

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.

This resource allows you to customize and generate chemical equation balancing worksheets for testing or student practice.

In this interactive simulation students use their measurement and measurement conversion skills to prepare the bamzookis for a race. Students measure in metric units and then convert units to compare to measures in English customary units. In the final stage of the activity learners must combine pieces of tracks measured in different metric lengths to construct a track of 100 meters. Included with this activity is background information on measurement and a short quiz.

This simple but open-ended math game introduces basic probability concepts using coins and dice. Players roll the dice and collect coins to match the number rolled. Be careful, though; if you roll a 1, you lose your coins. The player to gather the most money wins.

This activity explores the main algorithms that are used as the basis for searching on computers, using different variations on the game of battleships. This activity demonstrates three search methods for finding information in data: linear searching, binary searching and hashing. It also includes an optional introductory activity as well as a video showing a fun demonstration related to the same content.

In this interactive game, learners compare their music-listening skills with that of a three-month-old baby. This game challenges learners to listen to pairs of tunes and detect whether their rhythm or melody is the same or different. Three-month-old babies can recognize rhythms and a series of notes as a melody. They often hear subtle changes to melodies and rhythm that adults sometimes miss. Requires a computer with speakers or headphones.

This interactive Flash game gives students practice in identifying multiples of given numbers. Users choose two multiplication tables (from 2 to 9) and the number of examples/bees they want to try (from 4 to 34). The game displays the chosen number of bees with numbers on them; users identify whether each is a multiple of one factor or the other, both factors, or neither factor. At the end of a round players may check their answers. ["e" = "and" in Italian]

For the learner just being introduced to fractions, this site is an excellent resource. It contain a very basic explanation of what a fraction is and a game for students to practice naming the fraction presented. The game can also be manipulated to have a time limit, to award time for each correct answer, and to time how fast students can get 20 more answers right than wrong.

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest. Learners play the role of dam operator, controlling how much water passes through the dam each season. First, learners choose whether it's a very dry or wet (or average) year and adjust the level of the reservoir in fall, winter, spring and summer. Learners see how their choices affect the migrating river salmon, power bills, recreation, agriculture, flooding, and fish that live in the reservoir. The results are compared to those of the real operators, and learners can print out a copy of your final report.

In this board game, players take on the role of bioenergy crop farmers trying to earn a living while being good environmental stewards. In the process, players explore the economic and environmental tradeoffs associated with growing different bioenergy crops. The game also serves as an engaging way to explore a range of environmental issues and ecological interactions related to climate change mitigation, biodiversity conservation, water quality and sustainable agriculture.

In this activity (see "At Home" section of webpage), learners play bingo to learn about the diversity of birds. This game includes a warm-up lesson and "Full Flight" version. In the first game, learners match bird features (e.g. long legs for wading) to different species including the blackfooted penguin, snowy plover, and killdeer. Learners who get three matches in a row win the game. In the second game, learners match clues about bird behaviors and anatomy to the different species. Although this activity can be conducted at an aquarium, this game can be adapted for home or class use.

This board game challenges players (ages 10+) to build a spaceship and fly to a black hole. The game provides opportunities for understanding phenomena based on current black hole research. During the game, players will experience the dangers and excitement of a real space mission, and learn about the nature of black holes by launching scientific probes. The game can be played competitively or as a team (instructions are also provided for playing in large groups. Black Hole Explorer consists of: Game Board, Game Rules, Spacecraft Data sheets, Science Briefing Room document, Event cards (28), Probe result cards (12), Energy tokens (140). Game components are available as PDF downloads; dice and game pieces must be provided by the user. NOTE: tokens and cards need to be cut to size from letter-size cardstock.

GameUp is a collection of top FREE online game titles that tie right in to your Science, Math, and Technology curriculum.

Animated features and activities providing mathematics instruction and homework help for younger students (K-3). Each animation is accompanied by quizzes, games, vocabulary, and other activities. Topics include addition and subtraction, multiplication and division, how to use a calendar, how to count and use money, fractions, how to make measurements, and many others. Movies, animations, and activities available via paid subscription; 5-day free trial is offered. Site offers free lesson-plan ideas.