Teach With, Not 'To' the Test
Psychology and Neuroscience agree that tests themselves can be a valuable teaching tool, when they're brief, they're frequent, and they offer students immediate feedback.
Jason Gots is a New York-based writer, editor, and podcast producer. For Big Think, he writes (and sometimes illustrates) the blog "Overthinking Everything with Jason Gots" and is the creator and host of the "Think Again" podcast. In previous lives, Jason worked at Random House Children's Books, taught reading and writing to middle schoolers and community college students, co-founded a theatre company (Rorschach, in Washington, D.C.), and wrote roughly two dozen picture books for kids learning English in Seoul, South Korea. He is also the proud father of an incredibly talkative and crafty little kid.
If you hate the movement, it means either a) teaching test prep tricks, or b) teaching a limited range of factoids that are likely to appear on the test, in lieu of more meaningful content.
According to Princeton Neuroscientist Sam Wang, tests can be a valuable teaching tool when used effectively, and when used in combination with enjoyable, interactive projects that enable students to construct meaning actively (rather than learning it by rote).
The high stakes of state and citywide tests (in New York, for example, they are used to determine middle and high-school placement) also limit their effectiveness as a teaching tool, and introduce potentially harmful anxiety into the learning environment. The degree of harm depends upon the fragility of the child, but even at best, anxiety’s a lousy teacher.
Once again, hour-long standardized tests lose. They’re frequent enough to cause anxiety, but too rare and too long to support learning effectively. Depending on their quality, they might succeed in improving curricula or measuring some aspects of student learning. But their ubiquity means these tests are becoming a big part of instruction in public schools, a role they're not performing very well.
Dr. Wang does note one unintended possible benefit of standardized tests – they teach persistence:
Explore how alcohol affects your brain, from the first sip at the bar to life-long drinking habits.
- Alcohol is the world's most popular drug and has been a part of human culture for at least 9,000 years.
- Alcohol's effects on the brain range from temporarily limiting mental activity to sustained brain damage, depending on levels consumed and frequency of use.
- Understanding how alcohol affects your brain can help you determine what drinking habits are best for you.
If you want to know what makes a Canadian lynx a Canadian lynx a team of DNA sequencers has figured that out.
- A team at UMass Amherst recently sequenced the genome of the Canadian lynx.
- It's part of a project intending to sequence the genome of every vertebrate in the world.
- Conservationists interested in the Canadian lynx have a new tool to work with.
If you want to know what makes a Canadian lynx a Canadian lynx, I can now—as of this month—point you directly to the DNA of a Canadian lynx, and say, "That's what makes a lynx a lynx." The genome was sequenced by a team at UMass Amherst, and it's one of 15 animals whose genomes have been sequenced by the Vertebrate Genomes Project, whose stated goal is to sequence the genome of all 66,000 vertebrate species in the world.
Sequencing the genome of a particular species of an animal is important in terms of preserving genetic diversity. Future generations don't necessarily have to worry about our memory of the Canadian Lynx warping the way hearsay warped perception a long time ago.
Artwork: Guillaume le Clerc / Wikimedia Commons
13th-century fantastical depiction of an elephant.
It is easy to see how one can look at 66,000 genomic sequences stored away as being the analogous equivalent of the Svalbard Global Seed Vault. It is a potential tool for future conservationists.
But what are the practicalities of sequencing the genome of a lynx beyond engaging with broad bioethical questions? As the animal's habitat shrinks and Earth warms, the Canadian lynx is demonstrating less genetic diversity. Cross-breeding with bobcats in some portions of the lynx's habitat also represents a challenge to the lynx's genetic makeup. The two themselves are also linked: warming climates could drive Canadian lynxes to cross-breed with bobcats.
John Organ, chief of the U.S. Geological Survey's Cooperative Fish and Wildlife units, said to MassLive that the results of the sequencing "can help us look at land conservation strategies to help maintain lynx on the landscape."
What does DNA have to do with land conservation strategies? Consider the fact that the food found in a landscape, the toxins found in a landscape, or the exposure to drugs can have an impact on genetic activity. That potential change can be transmitted down the generative line. If you know exactly how a lynx's DNA is impacted by something, then the environment they occupy can be fine-tuned to meet the needs of the lynx and any other creature that happens to inhabit that particular portion of the earth.
Given that the Trump administration is considering withdrawing protection for the Canadian lynx, a move that caught scientists by surprise, it is worth having as much information on hand as possible for those who have an interest in preserving the health of this creature—all the way down to the building blocks of a lynx's life.
The exploding popularity of the keto diet puts a less used veggie into the spotlight.
- The cauliflower is a vegetable of choice if you're on the keto diet.
- The plant is low in carbs and can replace potatoes, rice and pasta.
- It can be eaten both raw and cooked for different benefits.
SMARTER FASTER trademarks owned by The Big Think, Inc. All rights reserved.