The product I’m producing is a card set called Chain. It’s a tool to provide teacher interacting with students by viewing the information on the cards together. It’s more colorful and interesting than using traditional teaching materials such as PowerPoints or textbook. To start using the cards by separating students into two groups. Then the teacher starts to explain the food web information based on food web graphics card that is included in each set of the card box. There are two different sets of food webs. Land animals food web, the other one is marine animal food web. After the teacher explains the relationships between each organism on the food web, the student from one group can start with a random card. Then the other group of students is required to find a card that can either defeat the previous card or relate to it in order to gain points. There is a detailed instruction on the card box for reference. This tool is designed to have every student participating in learning information together. Students are required to answer questions that are related to food chain knowledge. During this learning process, the teacher should be the judge to take charge of the situation in order to cultivate students to work and think as a team during competition.