From cells to organ systems
Build the body one level at a time so it is easier to tell a cell, tissue, organ, and organ system apart.
High school foundationOpen lesson
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47 matches for “what is the difference between an organ and an organ system”
Carrying Out a Test for the Difference Between Two Population Means
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicCarrying Out a Test for the Difference Between Two Population Proportions
AP Statistics · 3: Inference for Categorical Data: Proportions.
AP / advanced high schoolOpen AP topicConstructing a Confidence Interval for the Difference Between Two Population Means
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicConstructing a Confidence Interval for the Difference Between Two Population Proportions
AP Statistics · 3: Inference for Categorical Data: Proportions.
AP / advanced high schoolOpen AP topicJustifying a Claim Based on a Confidence Interval for the Difference Between Two Population Means
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicJustifying a Claim Based on a Confidence Interval for the Difference Between Two Population Proportions
AP Statistics · 3: Inference for Categorical Data: Proportions.
AP / advanced high schoolOpen AP topicSampling Distributions for the Difference Between Sample Proportions
AP Statistics · 3: Inference for Categorical Data: Proportions.
AP / advanced high schoolOpen AP topicSampling Distributions for the Difference Between Two Sample Means
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicSetting Up a Test for the Difference Between Two Population Means
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicSetting Up a Test for the Difference Between Two Population Proportions
AP Statistics · 3: Inference for Categorical Data: Proportions.
AP / advanced high schoolOpen AP topicHow systems work together
Follow what moves between connected parts, see how one part’s output can become another part’s input, and use feedback to explain how a system adjusts.
High school foundationOpen lessonHow energy moves through ecosystems
Read food-web arrows as energy pathways and explain why less usable energy reaches higher trophic levels, or feeding levels.
High school foundationOpen lessonCarrying Out a Test for a Population Mean or Population Mean Difference
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicConstructing a Confidence Interval for a Population Mean or Population Mean Difference
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicCultural Interactions Between Europeans, Native Americans, and Africans
AP United States History · Unit 1: Period 1: 1491–1607.
AP / advanced high schoolOpen AP topicDefining Political Organizations
AP Comparative Government and Politics · Unit 1: Political Systems, Regimes, and Governments.
AP / advanced high schoolOpen AP topicElectoral Systems and Rules
AP Comparative Government and Politics · Unit 4: Party and Electoral Systems and Citizen Organizations.
AP / advanced high schoolOpen AP topicInterlocking Systems of Oppression
AP African American Studies · Unit 4: Movements and Debates (1940s–2000s).
AP / advanced high schoolOpen AP topicInternational and Supranational Organizations
AP Comparative Government and Politics · Unit 5: Political and Economic Changes and Development.
AP / advanced high schoolOpen AP topicJustifying a Claim Based on a Confidence Interval for a Population Mean or Population Mean Difference
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicPersistent Organic Pollutants (POPs)
AP Environmental Science · 8: Aquatic and Terrestrial Pollution.
AP / advanced high schoolOpen AP topicPolitical Party Systems
AP Comparative Government and Politics · Unit 4: Party and Electoral Systems and Citizen Organizations.
AP / advanced high schoolOpen AP topicRole of Political Party Systems
AP Comparative Government and Politics · Unit 4: Party and Electoral Systems and Citizen Organizations.
AP / advanced high schoolOpen AP topicSetting Up a Test for a Population Mean or Population Mean Difference
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicSpatial Organization of Agriculture
AP Human Geography · Unit 5: Agriculture and Rural Land-Use Patterns and Processes.
AP / advanced high schoolOpen AP topicChange and continuity over time
Compare evidence from more than one moment so a history of change also shows what lasted, for whom, and at what pace.
High school foundationOpen lessonWater and carbon cycles
Track where water and carbon can be stored, what moves them, and how one change can affect several connected parts of an ecosystem.
High school foundationOpen lessonWhat cells have in common
Use the standard four-feature cell model, then account for the specialized cells that change as they mature.
High school foundationOpen lessonCause, effect, and historical context
Place an event inside its larger setting, connect causes through evidence, and explain why different groups may experience different effects.
High school foundationOpen lessonCell membranes and transport
Decide whether a substance can diffuse through the membrane, needs a protein pathway, or must be moved with cellular energy.
High school foundationOpen lessonCustomers, value, and markets
Move from a broad business idea to a clear customer, useful benefit, and evidence you could gather before making a larger commitment.
High school foundationOpen lessonHomeostasis and negative feedback
See homeostasis as active adjustment: a system detects change and responds to keep a condition within a workable range.
High school foundationOpen lessonProtons, neutrons, and electrons
Use charge, location, and particle count to connect an atom’s structure with its element symbol.
High school foundationOpen lessonRevenue, costs, profit, and cash flow
Separate what a business earns, when cash moves, and how much cash is available so similar-looking numbers do not get confused.
High school foundationOpen lessonChange in Momentum and Impulse
AP Physics 1: Algebra-Based · 4: Linear Momentum.
AP / advanced high schoolOpen AP topicConservation of Linear Momentum
AP Physics 1: Algebra-Based · 4: Linear Momentum.
AP / advanced high schoolOpen AP topicElastic and Inelastic Collisions
AP Physics 1: Algebra-Based · 4: Linear Momentum.
AP / advanced high schoolOpen AP topicImpact of Social Movements and Interest Groups
AP Comparative Government and Politics · Unit 4: Party and Electoral Systems and Citizen Organizations.
AP / advanced high schoolOpen AP topicLinear Momentum
AP Physics 1: Algebra-Based · 4: Linear Momentum.
AP / advanced high schoolOpen AP topicObjectives of Election Rules
AP Comparative Government and Politics · Unit 4: Party and Electoral Systems and Citizen Organizations.
AP / advanced high schoolOpen AP topicPluralist and Corporatist Interests
AP Comparative Government and Politics · Unit 4: Party and Electoral Systems and Citizen Organizations.
AP / advanced high schoolOpen AP topicSampling Distributions for Sample Means
AP Statistics · 4: Inference for Quantitative Data: Means.
AP / advanced high schoolOpen AP topicAP Computer Science Principles
6 sections and 38 topics. Explore how computing innovations are created, how programs and data work, how networks connect systems, and how computing affects people, communities, and society.
AP / advanced high schoolOpen AP courseAP Human Geography
7 sections and 68 topics. Use maps, data, spatial reasoning, and geographic models to explain how people, cultures, political systems, cities, agriculture, and economies organize space.
AP / advanced high schoolOpen AP courseEnvironmental Science Foundations
Use evidence and system models to understand how organisms, energy, matter, and human choices shape the environment.
High school foundationOpen courseIntroduction to Health Science
Learn basic health-science terms and how body systems work without treating educational material as medical advice.
High school foundationOpen course
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