Exploring Multiplication of Positive and Negative Numbers (ACCESS Prealgebra)

① This interactive applet demonstrates what happens when positive and negative numbers are multiplied, allowing students to observe the sign patterns (positive×positive=positive, positive×negative=negative, negative×negative=positive) through dynamic visual feedback. ② Core mathematical concepts include integer multiplication, sign rules, number line and coordinate plane representation, and the geometric interpretation of products as areas or lengths. ③ Construction details: Based on the construction summary, the applet uses GeoGebra commands Intersect and Polygon, creating points A, B, C, D and polygon poly1, along with segments a, b, c, d, e, f and text1. Likely, sliders or draggable points adjust the values, and the resulting product is visualized via area or position changes. ④ Suitable for middle school prealgebra students, this applet serves as an interactive classroom demonstration or self-paced exploration tool, helping learners build intuitive understanding of signed number multiplication and providing a template for teachers to create similar activities.