study guides

How to study for AP Human Geography, from unit tests to the May 3, 2027 exam

How to study for AP Human Geography: every model the course names, by unit, what to memorize and what to practice, unit-test advice, and a 44-card models deck.

44 flashcards6 min read

How to study for AP Psychology, from unit tests to the May 14, 2027 exam

How to study for the new AP Psychology exam on May 14, 2027: the five units, the AAQ and EBQ part by part, what to memorize and what to skip, and a free deck.

45 flashcards7 min read

How to study for AP World History, from unit tests to the May 2027 exam

Which AP World units weigh most for the time they take, what to memorize and what to practice, the May 2027 format, and a free Unit 3 flashcard deck.

38 flashcards9 min read

How to study for anatomy and physiology: A&P 1, A&P 2 and the lab practical

What A&P 1 and A&P 2 cover, how a lab practical works, how to make flashcards for anatomy and for physiology, and a free deck on blood flow through the heart.

27 flashcards7 min read

How to study for AP Biology, from unit tests to the May 3, 2027 exam

What the May 3, 2027 AP Biology exam asks, which units weigh most, what to memorize and what you can skip, cram plans, and a free Unit 7 flashcard deck.

71 flashcards9 min read

How to study for APUSH, from unit tests to the May 2027 exam

What APUSH unit tests and the May 2027 exam ask, which units weigh most, what to memorize and what to practice, and a free Period 3 flashcard deck.

45 flashcards9 min read

How to memorize the strong acids and bases

The 6 strong acids and the strong bases in one table, the periodic-table pattern behind them, a mnemonic, the weak-acid traps and a 4-day plan.

42 flashcards3 min read

How to memorize the solubility rules

The solubility rules in one chart with every exception, a corrected CASH N' GIA mnemonic, the mix-ups, the one rule AP Chem tests and a 5-day plan.

50 flashcards4 min read

How to memorize the amendments

All 27 amendments to the US Constitution with what each does and the year, 5 groups by date, a hook for each Bill of Rights number, the mix-ups and a 7-day plan.

61 flashcards5 min read

How to memorize the 20 amino acids (names, codes and side chains)

All 20 amino acids with three- and one-letter codes, side-chain groups and the nine essential ones, the official reasons behind the odd letters, and a free deck.

106 flashcards5 min read

How to memorize the presidents in order

All 47 US presidencies in order with years, 6 sentences that spell them, the 5 name pairs people mix up, a 7-day plan and a 101-card deck.

101 flashcards5 min read

How to memorize the Krebs cycle

All 8 Krebs cycle steps in one table with enzymes, carbons and products, two patterns that halve the work, mnemonics, a 7-day plan and a free 51-card deck.

51 flashcards6 min read

How to memorize the polyatomic ions (without memorizing every one)

The 25 common polyatomic ions with formulas and charges, the naming rules and periodic-table pattern that give you most charges, a mnemonic, and a free deck.

65 flashcards6 min read

How to memorize the bones of the body, region by region

All 206 bones counted region by region, a mnemonic for the skull, spine, wrist and foot, the mix-ups that cost points, a 7-day plan and a free 74-card deck.

74 flashcards7 min read

How to memorize the periodic table, one row at a time

Elements 1 to 36 by row with numbers and symbols, a mnemonic for each row, the symbol mix-ups that cost points, a 7-day plan, and a free 76-card deck.

76 flashcards5 min read

How to memorize the 12 cranial nerves (and what each one does)

The 12 cranial nerves in order, which are sensory, motor or both, what each does, where it leaves the skull and how nurses test it, with clean mnemonics and a deck.

68 flashcards6 min read

How to memorize the unit circle (it's really only three numbers)

Memorize the unit circle with three patterns instead of 48 values: the square-root count, reference angles and the quadrant signs, plus the hand trick and a deck.

56 flashcards5 min read

The best app blockers for studying in 2026

14 app blockers for studying compared: how each one blocks, the free options, student discounts, and US prices checked in October 2026.

12 min read

The best study apps for high school students in 2026

15 study apps for high school compared by job: flashcards, AI, focus, planning and notes, with free tiers in numbers and US prices checked in October 2026.

9 min read