Deductive Reasoning Teacher Resources

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Students recognize problems that may be solved using deductive reasoning, and develop aids to help them in solving these problems. They produce their own deductive reasoning puzzles for other students to solve.
Students develop a strategy list for problem solving by working with different types of problems. They recognize problems that may be solved using deductive reasoning and solve deductive reasoning problems.
Getting young mathematicians to persevere when solving problems is an important skill. Here is one way to introduce deductive logic puzzles at the beginning of the year and add a creative dimension that they can use throughout the course. 
Young scholars solve sentences using deductive reasoning. In this geometry lesson, students are asked to translate sentences using logic and deductive reasoning.
In this logic worksheet, students read an "invitation to a mystery ball" and then use math clues to determine the date of the ball, the 5-digit house number where the ball will be held, and who is hosting.
Students show how to solve subtraction problems using manipulative materials and deductive reasoning. They construct subtraction sentences using information from the activity.
Third graders apply deductive reasoning and make predictions. In this language arts lesson, 3rd graders discuss questions and use deductive reasoning to make a prediction. Students look for patterns and prior knowledge to make predictions.
Learners determine the story elements of typical mystery stories including characters and plot structure. They look at vocabulary that is common to mystery stories before reading and responding to mystery chapter books. Working in guided reading groups, they act as detectives to complete case files while paying attention to details in readings.
Use the 20 Questions game to practice math vocabulary and number properties! Project a hundreds chart and hand one out to learners. Ideally, give them counters (beans would work well) to mark off the chart so you can play multiple times. You choose a number, and they ask yes or no questions to figure it out in less than 20 questions. As they get answers, they use deductive reasoning to omit numbers. Your class could also do this in pairs.
Eighth graders work in groups of 3-4 for this activity. They are given a sealed shoeboxes, which contains a few small items. By performing a variety of tests on the boxes, the students form hypotheses, and use deductive reasoning, on the size, shape, and identity of the objects in the box. This activitiy introduces students t the concept of atoms, and how they may have been discovered, despite their small size.
Collect and analyze data. Pupils graph their data and model with it to solve real life problems. They use logic and deductive reasoning to draw conclusions.
Solve the mystery of a declining frog population! Lead your junior ecologists on an investigation that simulates actual events concerning pollution, predation, poaching, and more. Investigators read a story online, then analyze survey results and interviews with characters. This is an amazing interactive experience for your young biologists!
Rumours of illness, poisoning, and madness - a ship disappears without a trace! Read this interactive science story and use deductive reasoning skills to solve a mystery. This engaging resource gives science stars a chance to practice problem solving. Since the possible causes of death in the story are all diseases, this would be ideal as an enrichment activity for your biology course, particularly when studying infectious disease, bacteria, or viruses.
Fifth graders research math basic skills assignments on various bookmarked websites. They work in teams to complete the project, print out the assignments, and place them in folders. They can also create their own math games utilizing ideas from math Web sites.
Learners write math sentences to fit a given story. They recognize number families and discuss the character traits of a sharing and relate their feeelings and experience with sharing. The Doorbell Rang story is read and the students have to divide fake chocolate chip cookies for sharing.
Students define direct, indirect and transitive reasoning, give examples of direct, indirect and transitive reasoning, and identify valid and invalid arguments.
In this deductive reasoning instructional activity, high schoolers answer 5 questions about a Venn diagram.  Students use deductive reasoning to answer each question.
Students investigate triangles and congruences. In this geometry lesson, students differentiate between inductive and deductive reasoning. They differentiate between similar and congruent triangles.
Sherlock Holmes had fantastic skills of observation. Your super sleuths will examine the pattern, rhythm, texture, and color of a painting to uncover the symbolism beneath. A great lesson, that incorporates observation, art analysis, critical and deductive reasoning. 
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 prior knowledge and the informational clues provided by the culprit.

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