Written for remedial/developmental students without algebraic skills, these three arithmetic modules for electronics cover measure, formulas, and pythagorean theorem. The self-paced modules incorporate use of calculators. With this aid the level of difficulty of comprehension is approximately seventh grade. Module 1, Measure, covers nine topics: powers of 10, metric words, basic electronic measure, basic change, multiply powers, more power multiplication, division with powers, changing metrics, and changing measure. Module 2, Formulas, covers four topics: changing formulas, electrical power, Ohms law, and time and frequency formulas. Module 3, Pythagorean Theorem, covers three topics: square root (using calculator), length of hypotenuse, and length of sides. Answers are provided for all exercises/problems. (YLB)