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【PBL科学学科项目化学习】如何像科学家一样研究与探索世界

01-09 08:38发布于广东

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项目化学习包含了多种课程样态,从最具有系统性和跨学科项目化学习特征的IB课程,到主题式活动、研究性学习;从基于问题的学习、探究学习、STEAM课程到基于现象的教学等。这些都是基于情境的学习的理论假设,即认为学生在解决真实世界的问题中学得最好。

但是,它们在项目化的程度上是有差异的。真正意义上的跨学科项目化学习不是一种点缀,也不仅是学科拼盘,或者学科实践活动,它是学生通过真实而有意义的问题探讨,用类似于真实的成年专家(如科学家、作家、历史学家)解决问题的方式,像认知学徒一样参与到学习的过程中。



“为什么水会蒸发?”

“盐在水里也会蒸发吗?”

······

带着这些真实的疑问,孩子们如何像真正的科学家一样,在探究过程中学习和应用学科思想。在这一过程中,尤其重要的是如何采集证据、使用证据,做客观的描述,利用证据进行推论和解释。


三年级的科学和数学跨学科项目化学习为《解锁水的秘密》。学生在探知水的过程中,不仅要认知水的不同形态,还要尝试通过科学语言分析水的特性,以及结合数学的统计和数据分析、记录探知水的秘密。


PBL

本质性问题

水的特性是什么?水和人类有什么联系?

PBL

驱动性问题

盐水会蒸发吗?你能通过科学实验提取结晶的盐吗?

PBL

项目实施过程:

本项目以科学实验为主线,学生将会经历主题阅读、科学实验操作、周期性实验观察与记录、展示评价等环节。



盐水会蒸发吗?



在入项阶段,教师提出驱动性问题,明确项目内容,激发学生的学习兴趣,调动学习内驱力,积极主动地参与到项目中来。


学生不是直接从科学课本里获得知识,记住问题的答案,而是先独立思考,围绕“水的秘密”这一主题进行阅读,科学实验操作之前,孩子们提出了大量问题,丰富了问题墙,也丰富了老师对孩子已有知识的认知。


中外科学教师和数学教师以同一个主题展开不同角度的科学、数学探索,创设了不同的探索环境,为科学探索营造了一个“师生互相尊重、安全、有挑战性和负责任”的环境。


1. 在KWL问题墙上,建立学生之间、学生与中外科学、数学教师对话的空间

2. 在实验互动区中,建立学生独立观察、合作学习的空间

3. 在教学展示板上,展示学生探索过程,建立师生、家长三方可以对话的空间


在建构项目阶段,学生会遇到不少问题。比如:实验操作时的规范与否为什么会影响实验的结果?如何运用科学语言解读实验过程呢?


▲科学老师何佳怡指导学生进行盐结晶科学实验


教师和家长在项目中的支持作用开始显现。学校和家庭、社会是给予孩子学习探索不可或缺的学习者社区。教师制作示范了一个科学探索的学习支架——一个盐结晶的观察瓶和一个科学实验记录表。



孩子们在同步操作时,得到了足够的支持。这可以帮助学生以科学家的视角和思维方式思考问题,从而开阔孩子的视野,提升孩子思维的境界与维度



在项目的提炼阶段,孩子们有了更多机会相互讨论、深入思考。


“为什么一个星期了,我的盐水还没有结晶呢?”

“为什么瓶口会有盐呢?”

“变冷了,会不会影响盐结晶呢?”

“需要把盐加多一点吗?”


▲国际科学老师Isabella引导学生观察与测量

▲学生跟PBL课程负责人罗娟主任分享他的疑惑与想法


小组之间的合作学习开始慢慢产生可能。新生成的疑惑会被记录在问题墙上,以项目为核心创设的真实学习环境不知不觉创设出来。


数学老师和科学老师一起编制了一个资源学习支架——科学语言工具箱。它按照三年级数学课标和科学课标的学习内容及要求,用符合学生年龄特征的学科概念、数学、科学语言解读科学现象、观察过程。比如:数学老师刘晓佳是班主任,她持续引导孩子们做一个月的观察记录时,根据科学老师的引导,结合数学知识,引导孩子在实验观察记录中学习计算差值,测量等。教师之间的合作也给孩子之间的合作做了良好的示范。


▲【左图】数学老师刘晓佳指导学生作观察记录

▲【右图】国际科学老师Isabella为学生演示记录报告的制作


这个科学、数学PBL跨学科项目化的实施,学生能在老师的引导下发现问题、提出问题、解决问题。教师作为支持者,引导学生层层深入地理解如何用科学语言解读科学实验现象。不同文化、语言背景的学科教师共同创设了一个安全的真实的学习环境,鼓励学生提出自己真实的疑惑和想法,允许学生有自己的语言和声音,同时也用学科的语言和视角滋养学生,在儿童立场和学科立场中平衡着。


Total number of words: 908 words

Reading time: 5 minutes

Project-Based Learning (PBL) encompasses various forms of curriculum, ranging from the IB program with the most systematic and interdisciplinary features to theme-based activities, research-based learning; from problem-based learning, inquiry learning, and STEAM courses to phenomenon-based teaching. These are all based on the theoretical assumption of situated learning, suggesting that students learn best when solving real-world problems. However, there are differences in the degree of project-based learning among them.

Authentic interdisciplinary project-based learning is not just an embellishment, nor is it merely a mosaic of subjects or disciplinary practices. It involves students engaging in the learning process similar to cognitive apprenticeship, exploring real and meaningful problems and solving them in a manner similar to how real-world experts (such as scientists, writers, historians) would. The students participate in the learning process akin to cognitive apprenticeship, actively engaging with real-world problems in a meaningful manner.



"Why does water evaporate?"

 "Does salt also evaporate in water?" 

...

With these genuine questions, how do children learn and apply disciplinary thinking like real scientists in the process of exploration? In this process, it is particularly important to understand how to collect evidence, use evidence, provide objective descriptions, and use evidence for inference and explanation.


The interdisciplinary project-based learning in science and mathematics for the third grade is titled "Unlocking the Secrets of Water." In the process of exploring water, students not only need to understand the different forms of water but also attempt to analyze the characteristics of water using scientific language. Additionally, they integrate statistical and data analysis skills from mathematics to record and uncover the secrets of water.


PBL

Essential Questions

What are the characteristics of water? What connections exist between water and humans?

PBL

Driving Questions

Does saltwater evaporate? Can you extract crystallized salt through scientific experiments?

PBL

Project Implementation Process

The project revolves around scientific experiments, encompassing theme reading, hands-on scientific experiments, periodic observation and recording of experiments, and presentation evaluation.



Does 

Saltwater Evaporate?



During the initiation phase, teachers present driving questions, define project content, stimulate students' interest in learning, and engage them actively in the project to tap into their intrinsic motivation.


Students do not directly acquire knowledge from science textbooks, memorize answers to questions. Instead, they independently contemplate, read around the theme of "The Secrets of Water," and before engaging in scientific experiments, they generate numerous questions, enriching the question wall and enhancing the teacher's understanding of the children's existing knowledge.


Both domestic and international science and math teachers approach the same theme from different perspectives, creating diverse exploration environments that foster a "mutual respect, safe, challenging, and responsible" atmosphere for scientific exploration.


1. Establish a space on the KWL question wall for dialogue between students and between students and domestic and international science and math teachers.

2. In the interactive experiment area, create a space for students to independently observe and engage in cooperative learning.

3. On the teaching display board, showcase the students' exploration process, establishing a space for dialogue among teachers, students, and parents.


During the project construction phase, students may encounter several issues. For example, why does the adherence to standards during experimental operations impact the results? How can scientific language be used to interpret the experimental process?


▲Science teacher He Jiayi guides students in salt crystallization science experiment


The supportive roles of teachers and parents start to emerge during the project. The school and home, as well as the broader community, are indispensable learning communities for children's exploration. Teachers demonstrated a learning framework for scientific exploration – an observation bottle for salt crystals and a scientific experiment log. As children operated in sync, they received ample support. This can help students think about problems from the perspective and thinking style of a scientist, thereby broadening their horizons and enhancing the dimension and scope of their thinking.



During the refinement phase of the project, children had more opportunities for mutual discussion and in-depth thinking.



"Why hasn't my saltwater crystallized after a week?"

"Why is there salt around the bottle mouth?"

"If it gets colder, will it affect the salt crystallization?"

"Do we need to add more salt?"


▲Isabella, an international science teacher, guides students in observation and measurement

▲Student shares his doubts and ideas with Director Luo Juan, head of the PBL program.


Collaborative learning between groups slowly began to emerge as a possibility. Newly generated doubts were recorded on the question wall, creating an authentic learning environment centered around the project.


Math and science teachers collaborated to create a resource learning framework – the Scientific Language Toolbox. It interpreted scientific phenomena and observation processes using subject concepts, mathematics, and scientific language that align with the learning content and requirements of the third-grade math and science curricula. For example, the math teacher, Liu Xiaojia, who is also the class teacher, continuously guided the children in making a month-long observation record. Based on the guidance from the science teacher and combining mathematical knowledge, she guided the children in learning calculations, measurements, and other mathematical concepts within the experiment observation record. The collaboration between teachers provided a good example for collaboration among the students.


▲[Left photo] Math teacher Liu Xiaojia instructs students to make observation records.

▲[Right photo] International Science teacher Isabella demonstrates the making of record report for students.


The interdisciplinary implementation of this science and math PBL project allows students, guided by teachers, to discover, raise, and solve problems. Teachers act as supporters, guiding students to understand deeply how to interpret scientific experimental phenomena using scientific language. Subject teachers from different cultural and language backgrounds jointly created a safe and authentic learning environment, encouraging students to voice their genuine doubts and thoughts. They allowed students to have their own language and voice while nurturing them with subject-specific language and perspectives, striking a balance between the child's standpoint and the subject standpoint.


声明:本文内容为国际教育号作者发布,不代表国际教育网的观点和立场,本平台仅提供信息存储服务。

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