Drawing from a scenario of the history of the penny, learners write and solve a system of linear equations from a context.

I can't calculate a base-2 logarithm since my calculator doesn't have a base-2 log key. Young mathematicians use the change of base formula to extend the properties of logarithms to all bases. Among these bases is the natural log base,...

Students use powers of ten to make reasonable estimations for list of questions. They share their problem solving techniques with the class.

Learners practice problem solving techniques. They interpret data gathered by student researchers in Australia about the effectiveness of various strategies for controlling weed growth in a newly replanted rainforest.

Third graders perform skits and note ideas fro problem solving in various situations. In this coping lesson, 3rd graders role play problem solving and coping in life-changing situations based on "What to Do" solution starters. 

Students develop an understanding and appreciation of water purification techniques and their implications for health maintenance.

Students, in groups, create a minibook with simulated textures using crayons and a rubbing technique. They create a cut paper collage from crayon rubbings.

Students redesign the classroom space. In this geometry lesson, students part take in making classroom rules and assigning value to the space in the classroom. They investigate measuring and problem solving in this lesson.

Practice the techniques associated with number theory. This 5-page worksheet has many different types of problems for the students to solve and is a great component for any number theory unit8.

A deceptively simple question setup leads to a number of attack methods and a surprisingly sophisticated solution set in this open-ended problem. Young geometers of different strengths can go about defining the solutions graphically,...

Introduce the inverse matrix method to solve systems of linear equations both algebraically and graphically. Using given data, your class checks their answers with graphing calculators. Handouts are included in this well-thought out lesson.

Students examine the problems of the continued development of aquaculture. They also brainstorm ideas that people in this field would need to be successful.

Student demonstrate knowledge of recombinant DNA techniques (restriction enzyme digest, gel electrophoresis, and staining gel). They demonstrate skills needed to complete a gel electrophoresis and interpret a stained gel. Pupils solve...

Learners use the scientific method explicitly and independently to solve a problem/answer a question. They are able to write complete and comprehensive lab protocol that helps answer a question and use appropriate grammar and writing...

In this math learning exercise, students learn to multiply larger numbers by one or two digits mentally. Students read the simple techniques and then solve 25 multiplication problems using these mental math skills.

Ever wonder how a butcher creates the different types of ground beef? Young mathematicians explore the methods butchers use to create their desired ground beef quality. Given a combination of two types of meat with varying...

Future chemists practice laboratory techniques by creating a monochloramine solution. The objectives are to use of dilution, 9concentration, and measurement skills and to prepare a solution that will be used in a water treatment...

M.C. Escher is famous for creating optical illusions. Examine this effect in several of his works and discuss the techniques involved. Inspired by the discussion, learners create an imaginary 3-D world inside of a box using various...

Can your classes solve the problem of the smelly sweat sock? Young scientists complete a lab investigation that begins by using electrochemistry to generate colloidal silver. They use their solutions to test the rate of microbial growth...

Students role play to solve various foreign policy problems. They explore how various elements of the US foreign policy system operate and practice in conflict resolution.

Four simple equations, each with two variables, try to get at the important question of reasoning about equations. The problem isn't to solve the equations, but to understand the nature of their solutions. These equations address the...

Buying a new sofa? Learn how to use the Pythagorean Theorem, as well as algebra and graphing techniques, to determine whether the sofa will fit around a corner (which I'm sure you'll agree is a very important consideration!).

Use science to solve the mystery of the Poplar murder. Pupils use forensic botany to determine if a suspect could be the killer. By analyzing images from a Transmission Electron Microscope, learners determine if the material found on the...

Eleventh graders practice the Quadrat Survey Technique to analyze the biodiversity of a local plant community. They compare its biodiversity with the documented changes in biodiversity of the tallgrass prairie over time.