Math · C001
Whole numbers: add, subtract, multiply, and divide
8 practice checks · Optional video
Review guideHESI study guide library
HESI study guides
Study all seven HESI subjects. Vocabulary now has its own strategy guides, word bank, mixed practice and spaced review; the other 72 guides remain available below.
Review by subject or search for a concept. Open the vocabulary course for core and additional words, taught word families, and practice.
Math · C002
Decimals: understand the places and calculate
4 practice checks · Optional video
Review guideMath · C003
Fractions: equal parts and simpler forms
2 practice checks · Optional video
Review guideMath · C004
Add and subtract fractions
3 practice checks · Optional video
Review guideMath · C005
Multiply and divide fractions
4 practice checks · Optional video
Review guideMath · C006
Change between fractions, decimals, and percentages
5 practice checks · Optional video
Review guideMath · C007
Ratios and proportions: find a missing amount
5 practice checks · Optional video
Review guideMath · C008
Ratios: compare parts with each other and with the whole
5 practice checks · Optional video
Review guideMath · C009
Percentages: find the part, whole, or change
5 practice checks · Optional video
Review guideMath · C010
Mean, median, mode, and range
5 practice checks · Optional video
Review guideMath · C011
Expressions and equations: calculate and find the unknown
6 practice checks · Optional video
Review guideMath · C012
Metric units: meters, grams, and liters
4 practice checks · Optional video
Review guideMath · C013
Convert feet, pounds, cups, and other everyday units
6 practice checks · Optional video
Review guideMath · C014
Time, temperature, and Roman numerals
6 practice checks · Optional video
Review guideReading · C015
Find the idea that holds a passage together
4 practice checks · Optional video
Review guideReading · C016
Match a claim to the detail that supports it
2 practice checks · Optional video
Review guideReading · C017
Use the passage to choose a word or phrase meaning
4 practice checks · Optional video
Review guideReading · C018
Distinguish purpose, tone, and unsupported intent
4 practice checks · Optional video
Review guideReading · C019
Separate checkable claims from judgments
4 practice checks · Optional video
Review guideReading · C020
Supported inference: make the smallest evidence-based step
4 practice checks · Optional video
Review guideReading · C021
Summarize without changing the passage
2 practice checks · Optional video
Review guideVocabulary · Rebuilt course
Vocabulary & general knowledge
5 strategy guides · Core + additional vocabulary · Word families · Practice
Open vocabulary courseGrammar · C070
Parts of speech: classify the job, not the spelling
2 practice checks · Optional video
Review guideGrammar · C071
Find the sentence structure
2 practice checks · Optional video
Review guideGrammar · C072
Keep subject and verb in agreement
4 practice checks · Optional video
Review guideGrammar · C073
Use tense and verb form to show time
4 practice checks
Review guideGrammar · C074
Choose clear pronouns
4 practice checks · Optional video
Review guideGrammar · C075
Attach modifiers to the intended meaning
4 practice checks
Review guideGrammar · C076
Repairing sentence boundaries and punctuation
4 practice checks · Optional video
Review guideGrammar · C077
Choosing grammatical forms by function and context
4 practice checks
Review guideAnatomy & physiology · C078
A consistent map of the body
4 practice checks · Optional video
Review guideAnatomy & physiology · C079
Four tissue classes, different jobs
3 practice checks · Optional video
Review guideAnatomy & physiology · C080
Skin as a barrier and temperature interface
5 practice checks · Optional video
Review guideAnatomy & physiology · C081
Bones, joints, and movement
10 practice checks · Optional video
Review guideAnatomy & physiology · C082
Muscle type, force and opposing actions
5 practice checks · Optional video
Review guideAnatomy & physiology · C083
Follow a neural message from input to response
5 practice checks · Optional video
Review guideAnatomy & physiology · C084
Map brain regions and nervous-system pathways
8 practice checks · Optional video
Review guideAnatomy & physiology · C085
Match endocrine sources, targets and feedback
8 practice checks · Optional video
Review guideAnatomy & physiology · C086
Follow blood through the heart, lungs and body
5 practice checks · Optional video
Review guideAnatomy & physiology · C087
Blood, vessels, and the electrical beat
5 practice checks · Optional video
Review guideAnatomy & physiology · C088
Lymph return and two branches of defense
6 practice checks · Optional video
Review guideAnatomy & physiology · C089
Move air, exchange gases, carry gases
5 practice checks · Optional video
Review guideAnatomy & physiology · C090
Follow food, then follow nutrients
5 practice checks · Optional video
Review guideAnatomy & physiology · C091
Follow a substance through the kidney
8 practice checks · Optional video
Review guideAnatomy & physiology · C092
Connect reproductive structures and cycles
8 practice checks
Review guideAnatomy & physiology · C093
Read a feedback loop by direction
3 practice checks · Optional video
Review guideBiology · C094
Life as organized, regulated systems
3 practice checks · Optional video
Review guideBiology · C095
Why water behaves differently
1 practice checks · Optional video
Review guideBiology · C096
Molecular classes: structure suggests function
3 practice checks · Optional video
Review guideBiology · C097
Cell compartments and the jobs they support
5 practice checks · Optional video
Review guideBiology · C098
Membrane transport and water balance
2 practice checks · Optional video
Review guideBiology · C099
Enzymes and ATP-coupled work
2 practice checks · Optional video
Review guideBiology · C100
Cellular respiration: stages and accounting
2 practice checks · Optional video
Review guideBiology · C101
Photosynthesis: energy and carbon pathways
2 practice checks · Optional video
Review guideBiology · C102
Cell division, chromosome sets and outcomes
4 practice checks · Optional video
Review guideBiology · C103
DNA information: copying, RNA and protein
5 practice checks · Optional video
Review guideBiology · C104
Alleles, expression and one-locus probability
5 practice checks · Optional video
Review guideBiology · C105
Pathogen groups and routes of spread
4 practice checks
Review guideBiology · C106
Broad defenses, specific responses and immune memory
4 practice checks · Optional video
Review guideChemistry · C107
Matter: composition versus physical form
2 practice checks
Review guideChemistry · C108
Scientific notation, units and measured precision
4 practice checks · Optional video
Review guideChemistry · C109
Atomic identity, isotopes and charge
4 practice checks · Optional video
Review guideChemistry · C110
Reading periodic organization
2 practice checks · Optional video
Review guideChemistry · C111
Bonds within particles and attractions between them
4 practice checks
Review guideChemistry · C112
Formulas, coefficients and atom conservation
4 practice checks · Optional video
Review guideChemistry · C113
Recognizing reaction patterns
3 practice checks · Optional video
Review guideChemistry · C114
Reaction rates and dynamic equilibrium
2 practice checks
Review guideChemistry · C115
Concentration with the correct denominator
4 practice checks
Review guideChemistry · C116
Amounts, molar masses and reaction ratios
3 practice checks · Optional video
Review guideChemistry · C117
Electron transfer and redox roles
1 practice checks · Optional video
Review guideChemistry · C118
Proton transfer, pH and neutralization
2 practice checks · Optional video
Review guideChemistry · C119
Nuclear emissions and repeated half-lives
3 practice checks · Optional video
Review guideChemistry · C120
Chemical features of biological molecules
3 practice checks · Optional video
Review guide