Another common struggle: the parts-of-a-whole problem. Fractions are introduced through the “pizza model,” but students’ ...

The concept of pro rata is rooted in fractions because proration attempts to make two fractions equal but with different denominators. The practice of prorating can apply from billing for services ...

We describe here a procedure for the isolation of low-abundance protein complexes from stereocilia membrane fractions. Using this procedure, combined with identification and quantitation of proteins ...