A detailed 37-slide PPT product with 2-page worksheet designed to introduce the concept of significant figures or significant digits to upper middle school or early high school math or science students. Topics include: what are significant figures (sig figs), precision and accuracy in measurements, why sig figs are useful, rules for counting sig figs, when zeroes are significant or not, multiplying and dividing with sig figs, adding and subtracting with sig figs, practice problems, and 2 form