TEXAS INSTRUMENTS TI 99/4A "Integers" cartridge
Condition: used, tested and working. Clean cartridge and label.
Cat. No.: PHM 3094
Year: 1981
Includes: cartridge only, no box or manual.
Shipping weight: 5 oz.
Label variation: black label, white cartridge
32 levels of skill for ages 9-13, leading students through each step to teach the basic concepts of negative numbers, greater than/less than, and parentheses within an equation.