Photosynthesis is a topic that every high school student must learn not only due to its importance to life on earth but because it inspires many other technologies nowadays. The objective is to illustrate hands-on learning activities to teach photosynthesis in an exciting and cost-effective way. It will improve their capacity to acquire the basic concepts as well as go deeper and increase their curiosity by being face to face with the different phenomena. The activity is divided into three experiments where the foci are chlorophyll extraction, plants’ oxygen production, and light’s intensity effect on photosynthesis. Each one lets the teacher introduce the basic concepts of photosynthesis and reinforce other chemistry practices and concepts. The activity took place in a Costa Rican high school with 15 10th grade students who worked in 3 groups of 5 students each. This one session activity is an integral approach to teach science with the overall purpose of awakening the interest of high school students in the subject through a low cost and versatile set of experiments that could be easily applied to any targeted audience. The collected data shows it achieved this goal.

中文翻译：

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唤醒人们对科学学习的兴趣：使用加拿大伊乐藻和欧洲菠菜的光合作用演示

光合作用是每个高中学生都必须学习的主题，这不仅是因为光合作用对地球生命的重要性，还因为它启发了当今许多其他技术。目的是说明动手学习活动，以令人兴奋且具有成本效益的方式教授光合作用。通过面对不同的现象，将提高他们掌握基本概念的能力，并加深他们的好奇心。该活动分为三个实验，其中重点是叶绿素提取，植物的产氧量以及光的强度对光合作用的影响。每一位老师都可以介绍光合作用的基本概念，并加强其他化学实践和概念。这项活动是在哥斯达黎加的一所高中举行的，有15名10年级学生，每组5人，分成3组。这项活动是一种教学科学的不可或缺的方法，其总体目的是通过低成本且用途广泛的一组实验来激发高中生对该学科的兴趣，这些实验可以轻松地应用于任何目标受众。收集的数据表明它已经实现了这一目标。