In this paper, we developed a platform-WSN block, combined with the wireless sensor network used for the activities in the classroom. The students usual organized the new concepts by cards or computer in the past .The former can’t be reuse, and the process of building the relationship between those concepts can’t be recorded and traced;and the later learning tool lack for interaction and the opportunity of talking between students. WSN blocks provide some advantages to be a learning tool as follow, the blocks has the ability of sensing first, there are RFID reader, accelerometer, and I2C system on the inside of the blocks could identify someone’s touch, measure the shock, and detect another’s ID the block connected up. In the second, the WSN blocks would record the sensing data and transmit it to the terminal station of teacher’s computer all the time. The WSN block could replace the cards and computer to be a new learning tool provide more benefits and interaction between the students and the teacher.