Students use logical arguments and inductive reasoning to make or disprove conjectures. After observing a teacher led demonstration, students discover that the deductive process narrows facts to a few possible conclusions. In groups,...

Tenth graders investigate if-then statements. In this geometry lesson plan, 10th graders identify the hypotheses and the conclusions of if then statements. The identify the "if" part and the "then" part using logical reasoning.

Students construct two-column proofs. In this geometry lesson, students use deductive reasoning and geometric properties to justify given geometric statements. Students compare and contrast proofs.

Fourth graders use inductive reasoning to find algebraic patterns in geometric figures. They use technology (i.e., calculators, computers) and manipulatives to discover number patterns involving geometric concepts. They solve concrete...

Just how big would it really be? Young mathematicians determine if different toys are proportional and if their scale is accurate. They solve problems relating scale along with volume and surface area using manipulatives. The...

Students measure prisms and determine their volume. In this measurement and reasoning lesson, students estimate the volume and area of prisms. They measure given boxes. Students use paper to create prisms and cylinders. They determine...

Find the math in recipes. Young chefs will follow a recipe and investigate the total cost for materials. They measure amounts of food necessary for the recipe and compute the per person cost.

Scholars discuss the many ways they use persuasion in their everyday lives and brainstorm specific ideas for encouraging someone to do something. With the list of persuasive techniques they made, young writers complete a graphic...

Conduct research on the Internet about labyrinths and mazes to learn about proportions and ratios. Inquisitive minds design their own maze, one maze is chosen and proportionately enlarged to 20 feet by 30 feet. This is a fun challenge...

Students discuss elements of word problems: key words, data, computation clues, and unnecessary information and use the four steps of problem solving to find a solution and check for reasonableness.

Students organize information by using the alphabet. Students organize materials alphabetically. Students alphabetize with the first, second and third letters of a set of words. Students discover applications for alphabetical order.

Third graders determine the outcome of each of the following situations and justify their findings: even number + even number = ?, even number + odd number = ?, odd number + odd number = ?, and odd number + even number = ?.

Learners compare graphs of their data that was generated on a NASA website.  In this seasons lesson students complete a lab activity. 

Middle schoolers discover scales for both the solar bodies' relative sizes and their distances from the sun. They find equatorial circumference and volumes of their solar bodies. Students apply estimation strategies and proportioanl...

Students study the concept of fraction using mathematical reasoning. In this problem solving fraction lesson, students use various methods to explain their reasoning in solving fractions. Students use a number of different prompts to...

Students listen to a verbal explanation of the function of deductive reasoning and problem solving. They read one of Donald Sobol's 'Two-Minute Mysteries' and complete a worksheet requiring them to write out the information which is...

Students apply number and operation skills to learn how to spend a gift certificate. In this mathematical reasoning lesson, students use base 10 blocks as money and calculate how much money they have.

Students listen and discuss word problems that promote students to demonstrate logical reasoning. In this logical reasoning lesson plan, students discuss 10 word problems.

Another A+ lesson on the impact of climate change comes to you from the National Earth Science Teachers Association. In this installment, learners model the stratification of water in lakes due to temperature differences. The lab also...

Fourth graders draw pictures and diagrams as they attempt to solve a mathematical problem involving the arrangement of eleven tables shaped like equilateral triangles and the seating of exactly twenty-five people.

I love lessons that incorporate the arts, they're so engaging and address a more diverse set of learners. Your class will investigate the reasons fish from the coal reef have adapted such colorful fins. They design a fish that uses color...

Young scholars employ poetry as a medium to relay information and express views about significant environmental issues that exist today and to assess their effects on The State of the Planet as we enter the next millennium.

Learning about proportions through measuring and mapping distances is the focus of this real-world math lesson that doubles as an activity. Mathematicians complete a course designed to measure and map locations in order to put the...

Live Strong! High schoolers will discuss some of the reasons behind Lance Armstrong's success in cycling and chart those reasons into four categories: Physiology, Psychology, Equipment, Training/Strategy. They will then choose one sport...