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Project-Based  Learning  and  Academic  Achievement

3/1/2019

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Project-based learning is superior to traditional instruction, new study finds. Not only does it help students develop additional skills and attributes: it is also superior in terms of knowledge acquisition and academic performance.
As defined by the authors of a new study on the subject, Project-Based Learning “is a teaching and learning method engaging students in complex, real-world tasks that result in a product or presentation to an audience enabling them to acquire knowledge and life-enhancing skills.”

As such, some essential characteristics of Project-Based Learning (PBL) are:
  • Student voice and choice: students have much more say in a PBL context than they do in traditional instruction. They may, for instance, be free to devise their own research question, or select the end product of their work. This is an important factor of the effectiveness of PBL because “learning is more engaged when triggered by a student’s need to know than by a teacher’s ‘you should know’” (all quotes are from the original article.)

  • Inquiry: rather than being passive recipients, students involved in PBL perform active investigation and more generally discover and construct on their own the knowledge they acquire.

  • Autonomy: PBL promotes self-directed learning as students plan, monitor, and revise their work independently.

  • Collaboration: PBL usually involves group work. Students learn “on their own”, but not all alone. This can make the learning process more enjoyable and help students develop such crucial skills and attributes as: collective decision-making, time-management, responsibility and open-mindedness.

  • Problem-solving: more often than not, traditional instruction provides students with ready-made answers, while PBL exposes them to complex situations requiring constant adaptation.

  • Communication: the end-product of PBL is often a live presentation in front of an audience. Even when such is not the case, group work requires effective discussions.

  • Creativity: traditional instruction tends to focus exclusively on convergent thinking, while PBL exercises divergent thinking skills and rewards originality.

Such characteristics of PBL are in line with what we know about student psychology, both in terms of motivation and cognitive processing. For that reason, PBL could very well be superior to traditional instruction, not only in promoting essential skills and attributes, but also in terms of knowledge acquisition and academic achievement.

In the words of the authors:

“Problem-based learning has grown in popularity because psychological research has shown that students’ learning may be limited in the context of traditional direct instruction, and there is a need for education to adapt to a changing world in which learners are encouraged to use what they know to explore, create, and construct solutions in the learning process. Students in traditional instruction classrooms, on the other hand, only use the lowest levels of cognitive processing to perform basic work like reading and memorizing. As a consequence, students’ knowledge of the subject matter may be fleeting and superficial; students cannot apply what they have learned, and are not stimulated to study on their own.”

To test this hypothesis, two researchers conducted a meta-analysis on 30 journal articles published between 1998 and 2017. The studies involved over 12,500 students from 9 countries and showed a “medium to large” positive effect of PBL on academic performance. As a matter of fact, only 1 of the 30 studies found evidence of a negative influence of PBL.

Interestingly, the positive effect was true regardless of educational stage: PBL benefitted all students, from primary school all the way to college. Likewise, the size of the group was not an important factor--although one-student projects were in part responsible for the few poor results observed. As far as subject areas are concerned, PBL proved effective across the board, but more so in humanities than in math and sciences. Importantly, classes devoting more than 2 hours per week to PBL had the best results--confirming that this alternative approach to education takes time, but is a good investment.

Reference: Chen and Yang (2019), “Revisiting the effects of project-based learning on students’ academic achievement: A meta-analysis investigating moderators”, Educational Research Review, 60, pp, 263-274
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