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Related to teaching: Teaching methods

teach (one) a lesson

To convince one to avoid some unwanted behavior in the future through the inflicting of some form of punishment or harm. Can be said of the harm or punishment itself, or the agent inflicting the harm or punishment. After the CEO was found guilty, he was forced to repay $150 million in damages and will spend the next 10 years in jail. If that doesn't teach him a lesson, I don't know what will. A: "The cat scratched Bobby this time when he pulled its tail again." B: "Well, that ought to teach him a lesson." Are you going to mess with my little brother again, or am I going to have to teach you a lesson?
See also: lesson, teach

teach (one's) grandmother (how) to suck eggs

To try to teach an older person who is wiser, more experienced, and more worldly than a young person may think. Why are you explaining basic typing to Ethel? Sure, she's 70, but she's been using a computer since before you were born—quit teaching your grandmother to suck eggs! These young hotshots come in and try to prove they know the ropes better than we do, like they're teaching their grandmothers how to suck eggs.
See also: egg, grandmother, suck, teach, to

teach an old dog new tricks

To teach some new skill or behavior to someone, especially an older person, who is already firmly set in their ways. Usually used in negative constructions. A: "I really think we should adapt our business practices if we want to keep up with the times." B: "Kid, there's only one way I know how to do things. You can't teach an old dog new tricks." It's great that you want to teach your grandpa how to use a computer, but just be aware that it can be hard to teach an old dog new tricks.
See also: dog, new, old, teach, trick

teach away

1. In patent law, to criticize, discredit, or discourage a particular combination introduced or established in a later invention or reference, so as to preclude the latter's validity. Reference A clearly states that the placement of the parts within the machine, as detailed and proposed by Reference B, would fundamentally alter the functionality of the machine in a dangerous manner. It is thus our opinion that Reference A teaches away.
2. To teach in a foreign country; to teach abroad. I decided to get my certificate to teach English as a foreign language and spend the next year teaching away.
See also: away, teach

teach school

To teach; to be a teacher in a school. Did you know that Karen teaches school? I thought she was stockbroker. Don't feel so bad. I've taught school for 30 years, and I still run into situations I don't know how to handle.
See also: school, teach
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

teach an old dog new tricks

Change longstanding habits or ways, especially in an old person. For example, His grandmother avoids using the microwave oven-you can't teach an old dog new tricks. This expression, alluding to the difficulty of changing one's ways, was first recorded in 1523 in a book of husbandry, where it was used literally. By 1546 a version of it appeared in John Heywood's proverb collection.
See also: dog, new, old, teach, trick
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

(you can’t) teach an old dog new ˈtricks

(saying) (you can’t) make old people change their ideas or ways of working, etc: My grandmother doesn’t want a computer. She says you can’t teach an old dog new tricks.
See also: dog, new, old, teach, trick
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
Teaching Improvisation to Non-Improvisers Christopher Norton
You will be teaching each other." Teach Your Neighbor helps students become engaged in classroom activities and helps to build self-worth, because each student helps a neighbor to learn.
Rather than continue to try to fit into the arts and sciences research model, education schools must embrace the reality that teaching is a profession, not a craft, and that they are professional schools.
A narrower approach, it might be objected, could risk isolating specifically social doctrine from other teaching. But this need not happen, as the unity of Catholic thought could be established at the start and linkages between social and other teaching could be noted along the way.
The teaching pattern for the Christ in Art course in Dartmouth afforded me more time for other scholarly pursuits, but I also used that time to do additional class preparation that otherwise I would not have undertaken, which will also be outlined below.
Often CPAs can move into teaching positions based on substantial professional experience and their certification as CPAs.
"The best part was seeing her make connections between classes she was in to classes she was teaching," says senior Eleanor Smith, who has been in class with Houlihan as both teacher and fellow student.
(4) At issue here is how the teaching of social and other types of history can be made more challenging for students as they proceed through their programmes of study.
Because many people equate sex with intimacy, not enough emphasis is being placed on teaching children about relationships and emotional intimacy, says Bartlett.
For example, the American Board's Passport to Teaching certification program allows talented, motivated college graduates to demonstrate mastery of subject matter and knowledge of teaching through a series of rigorous examinations.
CRITICAL THINKING: Refer students to the comment of biology teacher Jen Miller, who says she sees no contradiction between the teaching of evolution and a belief in God.
First they provide faculty with feedback on teaching effectiveness.
Poor urban and rural districts are most often the ones in which teachers are emergency certified (one of six teachers in California's poor schools don't have teaching certificates), have little teaching experience, or are only certified in one of the several subjects they are expected to teach.
Most law enforcement agencies, however, can make better use of their in-service training programs by shifting their paradigm to take into account the needs of adult learners and by teaching with purpose, not just to cover the material.
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