.acrylic whiteboard.First, the use of electronic whiteboard teaching, to facilitate the creation of problem situations, to stimulate students' curiosity "interest is the best teacher." In mathematics teaching to make students focus, bring thoughts into a specific learning situation, Stimulating students' strong interest in learning and strong curiosity is the key to the success of a class. Because the lower grades are mostly based on image thinking, abstract thinking is a difficult point for them. Therefore, the rational use of electronic whiteboards to introduce new lessons can have a multiplier effect, which can effectively guide students into the cognitive field and stimulate students' exploration of knowledge. Make students change from active to active, and understand and master knowledge in a relaxed and pleasant environment. For example, in the teaching of ??multiply, multiply and subtract??, first display 5 fish tanks in multimedia, and each fish tank has 5 fish. Ask the students: ??How many fish are there??? It is easy to list the students before using the knowledge. The formula: 5 ?? 5 = 25 (bar), after the animation shows that 5 fish jumped out of the aquarium, and then asked the students: "How many fish do you have now? How to formulate? You can list a few a different formula?" This is interesting and interesting.