IM 7.5.2 Practice: Changing Temperatures
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① This example demonstrates how to model temperature increases and decreases on a number line or thermometer, helping students intuitively understand addition and subtraction of positive and negative integers. ② Core math concepts include integer operations, meaning of positive and negative numbers, calculation of temperature change, and direction/distance on a number line. ③ Construction notes: Although no specific GeoGebra commands are provided in the summary, typical construction involves using a number line tool, points for initial and final temperatures, and arrows or segments to represent the change, possibly with a slider to control the change value. ④ Suitable for 7th-grade students learning integer addition/subtraction or temperature contexts, and useful for classroom demonstration or independent practice to reinforce the real-world meaning of negative numbers.
AI Drawing Prompt Reference
Draw a horizontal number line with integer tick marks, and include a vertical thermometer-style guide. Place two points on the line representing the initial and final temperatures, connected by an arrowed segment pointing in the direction of change. Add a slider to adjust the temperature change amount, keeping the initial temperature fixed while the final temperature moves with the slider. Label the current temperature values and the change amount above the line, using red for increases and blue for decreases. Keep the layout clear for classroom demonstration.
The prompt above was compiled from the original drawing commands and is for reference only.