April 18, 9:
Marzano Unassisted discovery learning is perilous to student learning, but enhanced discovery learning can be a Discovery learning instructional tool. After all, constructing one's own meaning must be more effective.
Unfortunately, research doesn't support the superiority of discovery learning over direct instruction, as cognitive psychologist and researcher Richard Mayer pointed out in In that same study, the researchers reported on a second meta-analysis involving comparisons of "enhanced" discovery learning with other forms of Discovery learning.
They found that enhanced discovery learning was superior to other approaches.
These findings are consistent with what I have observed in classrooms. A practitioner can take away two conclusions from these disparate findings: First, unassisted discovery learning is perilous to student learning; second, enhanced discovery learning can be a useful instructional tool.
What Is Unassisted Discovery Learning?
Unassisted discovery learning involves presenting students with a situation in which they must discover new content while receiving little, if any, assistance.
Teachers might ask students to design their own experiment, invent their own strategy, or answer guiding questions. For example, a science teacher might provide students with a brief demonstration of how perceptions of color change depending on the intensity of the light source and then ask them to design their own experiment to further examine this relationship.
A mathematics teacher might challenge students to estimate the sum of two three-digit numbers and then ask them to invent their own strategy for doing so.
Before showing students a video segment about how best to stretch a cramped hamstring muscle, a physical education teacher might ask students the following guided question: How would you need to modify this process for extremely cold temperatures?
In all these approaches, students are left on their own to learn the target content. Having students work with a partner who is no more knowledgeable about the content than they are doesn't help. Although students might learn about their reactions to unstructured situations, they probably won't learn content in more depth.
What Is Enhanced Discovery Learning? Enhanced discovery learning involves preparing students for discovery learning and providing assistance along the way. Teachers make sure that students have the necessary knowledge to negotiate the nuances of the content. This might involve some direct instruction.
For example, before asking students to consider how best to stretch the hamstring muscle in cold weather, the teacher might present a series of lessons that clarify basic facts about muscles and their reaction to changes in temperature.
Periodically asking students to generate ideas along the way and then explain their thinking is also an aspect of enhanced discovery learning. The teacher who asks students to generate their own strategy for estimating the sum of two three-digit numbers might present students with some problems to do as a whole class.
A student might come up to the front of the room to work through the first problem, sharing his or her thinking out loud. The teacher might question students and help them formulate their thinking into general guidelines for estimation, such as "start by estimating th sum of the highest place-value numbers.
Along the way, the teacher might also present worked examples—that is, problems that include a description of the estimation process used. It's also beneficial to properly scaffold the discovery experience.
The teacher who asks students to design their own experiments might organize her demonstration into small segments that gradually disclose the relationship between the intensity of a light source and perceptions of color.
After each segment, she might ask students to hypothesize what's likely to occur as the light source becomes more or less intense and then ask students to generate mini-experiments to test their hypotheses.
An Approach That Makes Sense When faced with the decision whether to use direct instruction or unassisted discovery learning, a teacher should opt for the former.
However, if a teacher is willing to put time and energy into designing lessons that ensure that students have the knowledge needed to understand the content and that provide guidance and interaction along the way, then discovery learning can be a powerful learning experience for students.
Should there be a three-strikes rule against pure discovery learning? The case for guided methods of instruction.
American Psychologist, 59, 14— Does discovery-based instruction enhance learning? Journal of Educational Psychology, 11—discovery learning center, sioux falls, south dakota, Daycare, infant, toddler, preschool. school age care. Discovery Learning Center, s. valley view rd., 41st. Find discovery learning lesson plans and teaching resources.
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