Project-based learning (PBL) is a student-centered pedagogy that involves a dynamic classroom approach in which it is believed that students acquire a deeper knowledge through active exploration of real-world challenges and problems.Students learn about a subject by working for an extended period of time to investigate and respond to a complex question, challenge, or problem. It is a style of active learning and inquiry-based learning. PBL contrasts with paper-based, rote memorization, or teacher-led instruction that presents established facts or portrays a smooth path to knowledge by instead posing questions, problems or scenarios.

Thomas Markham (2011) describes project-based learning (PBL) thus: "PBL integrates knowing and doing. Students learn knowledge and elements of the core curriculum, but also apply what they know to solve authentic problems and produce results that matter. PBL students take advantage of digital tools to produce high quality, collaborative products. PBL refocuses education on the student, not the curriculum—a shift mandated by the global world, which rewards intangible assets such as drive, passion, creativity, empathy, and resiliency. These cannot be taught out of a textbook, but must be activated through experience."James G. Greeno (2006) has associated project-based learning with the "situated learning" perspective and with the constructivist theories of Jean Piaget. Blumenfeld et al. elaborate on the processes of PBL: "Project-based learning is a comprehensive perspective focused on teaching by engaging students in investigation. Within this framework, students pursue solutions to nontrivial problems by asking and refining questions, debating ideas, making predictions, designing plans and/or experiments, collecting and analyzing data, drawing conclusions, communicating their ideas and findings to others, asking new questions, and creating artifacts."The basis of PBL lies in the authenticity or real-life application of the research. Students working as a team are given a "driving question" to respond to or answer, then directed to create an artifact (or artifacts) to present their gained knowledge. Artifacts may include a variety of media such as writings, art, drawings, three-dimensional representations, videos, photography, or technology-based presentations.

Proponents of project-based learning cite numerous benefits to the implementation of its strategies in the classroom – including a greater depth of understanding of concepts, broader knowledge base, improved communication and interpersonal/social skills, enhanced leadership skills, increased creativity, and improved writing skills. Another definition of project-based learning includes a type of instruction, where students work together to solve real-world problems in their schools and communities. Successful problem-solving often requires students to draw on lessons from several disciplines and apply them in a very practical way. The promise of seeing a very real impact becomes the motivation for learning.

John Dewey initially promoted the idea of "learning by doing". In My Pedagogical Creed (1897) Dewey enumerated his beliefs regarding education: "The teacher is not in the school to impose certain ideas or to form certain habits in the child, but is there as a member of the community to select the influences which shall affect the child and to assist him in properly responding to these.......I believe, therefore, in the so-called expressive or constructive activities as the centre of correlation."(Dewey, 1897) Educational research has advanced this idea of teaching and learning into a methodology known as "project-based learning". Blumenfeld & Krajcik (2006) cite studies by Marx et al., 2004, Rivet & Krajcki, 2004 and William & Linn, 2003 state that "research has demonstrated that students in project-based learning classrooms get higher scores than students in traditional classroom".

John Dewey in 1902

In Peer Evaluation in Blended Team Project-Based Learning: What Do Students Find Important?, Hye-Jung & Cheolil (2012) describe "social loafing" as a negative aspect of collaborative learning. Social loafing may include insufficient performances by some team members as well as a lowering of expected standards of performance by the group as a whole to maintain congeniality amongst members. These authors said that because teachers tend to grade the finished product only, the social dynamics of the assignment may escape the teacher's notice.

Project-based learning emphasizes learning activities that are long-term, interdisciplinary and student-centered. Unlike traditional, teacher-led classroom activities, students often must organize their own work and manage their own time in a project-based class. Project-based instruction differs from traditional inquiry by its emphasis on students' collaborative or individual artifact construction to represent what is being learned.

Project-based learning also gives students the opportunity to explore problems and challenges that have real-world applications, increasing the possibility of long-term retention of skills and concepts.

The core idea of project-based learning is that real-world problems capture students' interest and provoke serious thinking as the students acquire and apply new knowledge in a problem-solving context. The teacher plays the role of facilitator, working with students to frame worthwhile questions, structuring meaningful tasks, coaching both knowledge development and social skills, and carefully assessing what students have learned from the experience. Typical projects present a problem to solve (What is the best way to reduce the pollution in the schoolyard pond?) or a phenomenon to investigate (What causes rain?). PBL replaces other traditional models of instruction such as lecture, textbook-workbook driven activities and inquiry as the preferred delivery method for key topics in the curriculum. It is an instructional framework which allows teachers to facilitate and assess deeper understanding rather than stand and deliver factual information. PBL intentionally develops students' problem solving and creative making of products to communicate deeper understanding of key concepts and mastery of 21st Century essential learning skills such as critical thinking. Students become active digital researchers and assessors of their own learning when teachers guide student learning so that students learn from the project making processes. In this context, PBLs are units of self-directed learning from students' doing or making throughout the unit. PBL is not just "an activity" (project) that is stuck on the end of a lesson or unit.

Comprehensive project-based learning:

needs a climate or collaborative culture of mutual respect in the classroom in order to work well.

begins with an entry activity that serves as the advanced organizer to capture and inspire student interest.

is organized around an authentic, open-ended driving question or challenge.

creates a need to know essential content and skills and provides ways for students to resolve the need during PBL time.

benefits from collaborative inquiry to learn, problem to solve and/or to create or make something novel

develops critical thinking, problem solving, collaboration, and various forms of communication, often known as "21st Century Skills."

allows an increasing degree of student voice and choice (agency) throughout the PBL unit.

incorporates feedback and revision with opportunities for self, peer and teacher assessment of content, essential deeper learning skills, student made products and PBL processes such as research and presentations.

results in a publicly presented product or performance.

promotes and expands student agency (voice and choice)

is enriched by integration of digital skills especially when asking students to do research, organize or make assessments of the process, 21st Century essential skills and the product.

is enhanced when teachers become facilitators and incorporate high effects instructional strategies such as metacognition, cooperative learning and graphic organizers. (see Hattie and Marzano) [11] Enriched Learning Projects, Solution Tree Press

allows for authentic alternative assessments with rubrics for 21st Century Essential Learning Skills as well as content.and their transfer across the curriculum and into real life situations.

can be used as an all school change model for existing and new option schools such as New Maker Schools and New Tech Schools,

enriches teacher performance with deeper learning outcomes when professional development promotes teachers' skill development for learning how to plan, do and assess PBL in all classrooms.

has strong comparative research showing superiority over traditional instructional approaches.

Although projects are the primary vehicle for instruction in project-based learning, there are no commonly shared criteria for what constitutes an acceptable project. Projects vary greatly in the depth of the questions explored, the clarity of the learning goals, the content and structure of the activity, and guidance from the teacher. The role of projects in the overall curriculum is also open to interpretation. Projects can guide the entire curriculum (more common in charter or other alternative schools) or simply consist of a few hands-on activities. They might be multidisciplinary (more likely in elementary schools) or single-subject (commonly science and math). Some projects involve the whole class, while others are done in small groups or individually. For example, Perrault and Albert report the results of a PBL assignment in a college setting surrounding creating a communication campaign for the campus' sustainability office, finding that after project completion in small groups that the students had significantly more positive attitudes toward sustainability than prior to working on the project.

When PBL is used with 21st century tools/skills, students are expected to use technology in meaningful ways to help them investigate, collaborate, analyze, synthesize and present their learning. The term IPBL (Interdisciplinary PBL) has also been used to reflect a pedagogy where an emphasis on technology and/or an interdisciplinary approach has been included.

An example of a school that utilizes a project-based learning curriculum is Think Global School. In each country (THINK Global School) visits, students select an interdisciplinary, project-based learning module designed to help them answer key questions about the world around them. These projects combine elements of global studies, the sciences, and literature, among other courses. Projects from past years have included recreating Homer's The Odyssey by sailing across Greece and exploring the locations and concepts central to the epic poem, and while in Kerala, India, students participated in a project-based learning module centered around blending their learning and travels into a mock business venture. The interdisciplinary project was designed to enable students to engage in the key areas of problem solving, decision making and communication — all framed by the demanding parameters of a "Shark Tank", or "Dragon's Den" style competition.

Another example of applied PBL is Muscatine High School, located in Muscatine, Iowa. The school started the G2 (Global Generation Exponential Learning) which consists of middle and high school "Schools within Schools" that deliver the four core subject areas. At the high school level, activities may include making water purification systems, investigating service learning, or creating new bus routes. At the middle school level, activities may include researching trash statistics, documenting local history through interviews, or writing essays about a community scavenger hunt. Classes are designed to help diverse students become college and career ready after high school.

In 2009, The Illinois Consortium for 21st Century Schools lead by Deeper Learning author Jim Bellanca, initiated a 5-year deeper learning research project to identify the best practices and conditions among existing PBL models. In 6 pilot schools with students from the low performing to the highest performing, they piloted their findings. The goal was to test if all school/all day public schools could be transformed by PBL as initiated in schools such as Manor New Tech, This would test if traditional schools with established faculty could make such this deep shift.

As a result of the all school adoption of PBL in collaborative school wide cultures, several pilot schools earned accolades as P21 Exemplar schools (http://www.p21exemplars/Franklin) with raised achievement results and obvious evidence of teacher practice change. The model calls for all teachers and administrators to engage in a multi-year professional development effort which changed school culture, teachers re designing their units of study, teachers vetting all units and deciding which to contribute to a school based digital PBL library of unit plans and student artifacts, revisions in RTI, revisions in teacher evaluation and in student "grading".as well as an upgrading of grade level PLCs. The model empowers teachers to change how they deliver instruction so that MindQuest21 PBL is the dominant model of instruction in every classroom. The model was assessed in one three school public district with a rising "free and reduced,lunch" population. Following the pilot years, the Consortium initiated this change program in Chicago Public Schools, Atlanta Public Schools, and in a rural Illinois statewide network. The P21 Exemplar school site provides videos and descriptions of the Illinois projects as well as other PBL projects across the country.

The Bill and Melinda Gates Foundation has provided funding to start holistic PBL schools across the United States. These organizations include,

Big Picture Schools

EdVisions Schools

Envision Schools

New Tech Network

North Bay Academy of Communication and Design

Raisbeck Aviation High School

Another example is Manor New Technology High School, a public high school that since opening in 2007 is a 100 percent project-based instruction school. Students average 60 projects a year across subjects. It is reported that 98 percent of seniors graduate, 100 percent of the graduates are accepted to college, and fifty-six percent of them have been the first in their family to attend college.

The European Union has also providing funding for project-based learning projects within the Lifelong Learning Programme 2007–2013. For example, PopuLLar - Music and language learning, Moving toys in the classroom and ARTinED - A new approach to education using the arts.

According to Terry Heick on his blog, Teach Thought, there are three types of project-based learning. The first is Challenge-Based Learning/Problem-Based Learning, the second is Place-Based Education, and the third is Activity-Based learning. Challenge-Based Learning is "an engaging multidisciplinary approach to teaching and learning that encourages students to leverage the technology they use in their daily lives to solve real-world problems through efforts in their homes, schools and communities." Place-based Education "immerses students in local heritage, cultures, landscapes, opportunities and experiences; uses these as a foundation for the study of language arts, mathematics, social studies, science and other subjects across the curriculum, and emphasizes learning through participation in service projects for the local school and/or community." Activity-Based Learning takes a kind of constructivist approach, the idea being students constructing their own meaning through hands-on activities, often with manipulatives and opportunities to. As a private school provider Nobel Education Network combines PBL with the International Baccalaureate as a central pillar of their strategy.

PBL relies on learning groups. Student groups determine their projects, in so doing, they engage student voice by encouraging students to take full responsibility for their learning. This is what makes PBL constructivist. Students work together to accomplish specific goals.

When students use technology as a tool to communicate with others, they take on an active role vs. a passive role of transmitting the information by a teacher, a book, or broadcast. The student is constantly making choices on how to obtain, display, or manipulate information. Technology makes it possible for students to think actively about the choices they make and execute. Every student has the opportunity to get involved either individually or as a group.

Instructor role in Project Based Learning is that of a facilitator. They do not relinquish control of the classroom or student learning but rather develop an atmosphere of shared responsibility. The Instructor must structure the proposed question/issue so as to direct the student's learning toward content-based materials. The instructor must regulate student success with intermittent, transitional goals to ensure student projects remain focused and students have a deep understanding of the concepts being investigated. The students are held accountable to these goals through ongoing feedback and assessments. The ongoing assessment and feedback are essential to ensure the student stays within the scope of the driving question and the core standards the project is trying to unpack. According to Andrew Miller of the Buck Institute of Education, formative assessments are used "in order to be transparent to parents and students, you need to be able to track and monitor ongoing formative assessments, that show work toward that standard." The instructor uses these assessments to guide the inquiry process and ensure the students have learned the required content. Once the project is finished, the instructor evaluates the finished product and learning that it demonstrates

Student role is to ask questions, build knowledge, and determine a real-world solution to the issue/question presented. Students must collaborate expanding their active listening skills and requiring them to engage in intelligent focused communication. Therefore, allowing them to think rationally on how to solve problems. PBL forces students to take ownership of their success.

A frequent criticism of PBL is that when students work in groups some will "slack off" or sit back and let the others do all the work. Anne Shaw recommends that teachers always build into the structure of the PBL curriculum an organizational strategy known as Jigsaw and Expert Groups. This structure forces students to be self-directed, independent and to work interdependently.

This means that the class is assigned (preferably randomly, by lottery) to Expert Groups. Each of the Expert Groups is then assigned to deeply study one particular facet of the overall project. For example, a class studying about environmental issues in their community may be divided into the following Expert Groups:

Air

Land

Water

Human impact on the environment

Each Expert Group is tasked with studying the materials for their group, taking notes, then preparing to teach what they learned to the rest of the students in the class. To do so, the class will "jigsaw", thus creating Jigsaw Groups. The Jigsaw Groups in the above example would each be composed of one representative from each of the Expert Groups, so each Jigsaw Group would include:

One expert on Air

One expert on Land

One expert on Water

One expert on "Human impact on the environment"

Each of these experts would then take turns teaching the others in the group. Total interdependence is assured. No one can "slack off" because each student is the only person in the group with that "piece" of the information. Another benefit is that the students must have learned the concepts, skills and information well enough to be able to teach it and must be able to assess (not grade) their own learning and the learning of their peers. This forces a much deeper learning experience.

Anne Shaw recommends that when students are teaching each other they also participate collaboratively in creating a concept map as they teach each other. This adds a significant dimension to the thinking and the learning. The students may build upon this map each time they Jigsaw. If a project is scheduled to last over the time period of six weeks the students may meet in their Expert Groups twice a week, and then Jigsaw twice a week, building upon their learning and exploration of the topics over time.

Once all the experts have taught each other, the Jigsaw Group then designs and creates a product to demonstrate what they now know about all four aspects of the PBL unit – air, land, water, human's impact. Performance-based products may include a wide range of possibilities such as dioramas, skits, plays, debates, student-produced documentaries, web sites, Glogsters, VoiceThreads, games (digital or not), presentations to members of the community (such as the City Council or a community organization), student-produced radio or television program, a student-organized conference, a fair, a film festival.

Students are assessed in two ways:

Individual assessments for each student – may include research notes, teaching prep notes and teacher observation. Other assessments may include those assigned by the teacher, for example, each student in the class must write an individual research paper for a topic of their choice from within the theme of the overall PBL.

Group assessments – each Jigsaw group creates and presents their product, preferably to an audience other than the teacher or their class.