Big vs Little Problems: What Is Problem Solving?

Interactive Online Activities

 Collections    Selected Activities


Please don't underestimate the power of computer software to illustrate mathematical concepts! The computer's instantaneous ability to demonstrate the effects of a number or variable change or provide feedback on a solution can make for a very dynamic mathematics learning experience.


Collections
The x + y files
http://www.counton.org/xplusyfiles/
Digital Libraries at The Ohio State University

Here is a set of illustrated mathematics puzzles and activities that explore number theory, geometry, elementary abstract algebra, discrete math, and logic. Included are the Tower of Hanoi, questions related to regular polyhedra, and an exploration of division by zero. For problems that require solutions or proofs, Internet users must consult another resource if they are unable to solve the problems themselves. MSP full record


Alive maths
http://tapor1.mcmaster.ca/~sgs/maths/
Digital Libraries at The Ohio State University

Students explore a problem scenario through online simulations and uncover its mathematics through class discussion. Encourage students to identify relationships and patterns and to reflect upon and share their mathematical work. Each activity includes teaching suggestions, extension questions, and classroom narratives. MSP full record


Colorful mathematics
http://www.math.ucalgary.ca/~laf/colorful.html
Digital Libraries at The Ohio State University

These five educational games present advanced mathematical concepts. They use simple computer coloring and drawing techniques to illustrate concepts from graph theory and computer science. The goal is to help students experience a mathematics problem and to understand its difficulties while achieving partial solutions. The games are not about arithmetic or numbers, but rather about problem solving and the search for and discovery of patterns, considered the heart of mathematics. A software download is required. MSP full record


Math TV problem solving videos
http://www.mathtv.org
comPADRE: Resources for Physical and Astronomy Education

Students are challenged to solve math word problems after viewing a video with a step-by-step example solution. The online videos start with a typical word problem in algebra, geometry, probability, or another area. The host, Infinity Quick, solves the problem as in a tutorial, demonstrating each step as she proceeds. Viewers answer questions to help solve intermediate steps in the problem. At the end, students are presented with another similar problem to solve. An online calculator and a notepad for making sketches or figuring out the problem are available. Answers are checked automatically. MSP full record


Middle school (geometry)
http://www.ies.co.jp/math/java/geo/index.html
Digital Libraries at The Ohio State University

This site features almost 100 virtual manipulatives or applets designed to help students acquire an intuitive understanding of fundamental concepts in geometry. Many applets are problem-based. Students are presented with a problem and must use the applet to explore the problem. Topics addressed in the applets include congruent triangles, transformations, and the Pythagorean theorem. MSP full record


Selected Activities
About the Pythagorean theorem
The Pythagorean theorem
http://www.arcytech.org/java/pythagoras/index.html
Digital Libraries at The Ohio State University

Here is an online lesson designed to allow students to discover the Pythagorean theorem on their own. The developer believes that students will gain a deeper understanding, and have a rewarding experience, by figuring out the theorem for themselves. The lesson starts with a review of all the geometric essentials needed for the discovery activity. The review is followed by five clues, based on applets that form a guided discovery process for the theorem. MSP full record


An illustration of the Pythagorean Theorem, showing the sides of a triangle measured out in one-block units.
 
Pythagoras' theorem
http://thejuniverse.org/Mathdesign/widgets/Pythagoras/
Digital Libraries at The Ohio State University

Six interactive puzzle questions are presented to help students visualize the Pythagorean theorem and understand why it works. The puzzles feature a large square and four congruent right triangles with sides of length a, b, and c. Students use the triangles to cover part of the large square and examine the area of the remaining space. They may rearrange the triangles, note that the area of the remaining space does not change, and use this information to construct a relationship between the three sides. MSP full record


From the National Library of Virtual Manipulatives for Interactive Mathematics
Number line bounce (grades 6-8)
http://matti.usu.edu/nlvm/nav/frames_asid_107_g_3_t_1.html
Digital Libraries at The Ohio State University

In this number line game for summing numbers, students are challenged to find a sequence of operations with four numbers that results in a given target number. The numbers are illustrated as bouncing balls on a number line. Each bounce can be in either a positive or negative direction. The student can use a guess-and-check approach to solve the problem or a more sophisticated strategy. After finding a correct sequence and reaching the target number on the number line, the student forms the number sentence that illustrates the sequence of operations used to arrive at the target number. MSP full record


Fill and pour (grades 6-8)
http://matti.usu.edu/nlvm/nav/frames_asid_273_g_3_t_4.html
Digital Libraries at The Ohio State University

The student's goal when using this manipulative is to fill and pour juice in any order between two containers so that the target volume of juice is found in one of the two containers. The computer keeps track of the amount of juice in each container. In the challenge option, an impossible target number is given for specific sizes of containers, and the student is asked to explain why the situation is impossible. MSP full record


Mastermind (grades 6-8)
http://matti.usu.edu/nlvm/nav/frames_asid_179_g_3_t_1.html
Digital Libraries at The Ohio State University

Here is an interactive version of the classic logic game of the same name. The student plays against the computer and has eight chances to guess the colored pattern of four pegs. The student may select to play with a pattern consisting of two to six colors. MSP full record


From the Figure This! collection of 80 math challenges emphasizing math in the real world
Gone fishing: my, my little fish, how you've grown!
http://www.figurethis.org/challenges/c58/challenge.htm
Digital Libraries at The Ohio State University

Opening with a cartoon showing the weights of three combinations of fish, this activity challenges students to determine the weight of each fish. The introduction discusses algebraic reasoning and notes its importance to scientists, engineers, and psychologists. Students are encouraged to begin by adding the weights on all three scales. The answer page describes three strategies for solving the problem. MSP full record


Map coloring: how many colors of states are on a map of the U. S?
http://www.figurethis.org/challenges/c37/challenge.htm
Digital Libraries at The Ohio State University

Students explore the classic mathematics map-coloring question known as the four-color problem. They must determine the minimum number of colors needed to color a map so that entities sharing a border have different colors. Initially, students investigate the minimum number of colors necessary to color a map of states west of the Mississippi River. MSP full record


Rose Bowl: can a football team score 11 points in a game?
http://www.figurethis.org/challenges/c42/challenge.htm
Digital Libraries at The Ohio State University

Here's an activity for sports fans. The history of the Rose Bowl football tournament is used to examine numerical combinations. Students determine how many different ways a football team can end a game with 11 points, something that has never happened in Rose Bowl history. The activity suggests that students make tables to organize information as they examine possibilities. The usefulness of making a table in problem solving and prioritizing is noted. MSP full record


Three squares: when do two squares make a new square?
http://www.figurethis.org/challenges/c45/challenge.htm
Digital Libraries at The Ohio State University

This activity challenges students to find a way to construct a third square from given diagrams of two unequal squares. It introduces the Pythagorean theorem and explains its importance in construction and engineering professions. Students are encouraged to model the problem using squares of paper. MSP full record


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Copyright March 2005 — The Ohio State University. This material is based upon work supported by the National Science Foundation under Grant No. 0424671. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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