Title Description
Light through a pinhole Calculate where a ray of light coming through a pinhole hits an image plane.
Recognize fractions 2 Identify the fraction of a whole that is shaded.  
Measuring kidney function Renal system - Passage 2
Sums of consecutive integers Practice finding the nth number in a sequence of consecutive numbers based on the sum.
Intensifiers and adverbs of degree Identify and use adverbs of degree. Many of them don't end in "-ly"!
Solubility equilibria questions Solubility equilibria questions
Percent word problems Practice solving word problems involving percents.
Complex and compound-complex sentences Complex sentences are simple sentences with dependent or subordinate clauses added to them. Compound-complex sentences are compound sentences with dependent or subordinate clauses added to them.
Permutations & combinations Permutations and Combinations with overcounting
Pronoun vagueness Help clarify the sentence by keeping or changing existing pronouns.
Systems of linear equations word problems: Level 2
Basic division Divide two numbers.  Quotients are equal to or less than 10.
Analyzing categorical data For example, complete a conditional distribution given a two-way table.
Probabilities of compound events Practice using sample space diagrams to find probabilities.
Motion along a curve (differential calc) Solve problems that involve motion along a curve defined by a two-variable equation.
Classify numbers: rational & irrational Practice identifying whether numbers are rational or irrational.
Arithmetic series in sigma notation Practice writing finite arithmetic series like 6 + 10 + 14 in sigma notation.
Two-step equations Practice solving equations that take two steps to solve. For example, solve  -16 = x/4 + 2.
Multiplication and division word problems Practice solving multiplication and division word problems. Some problems have remainders.
Compare shapes Practice comparing shapes based on their number of sides, number of corners, and side-lengths.