# Grade 8: Science A course roadmap (science). Language: en. By @si. Licence: CC BY-SA 4.0. 0 of 15 concepts ready. In the app: https://ai.page/roadmap/in-sci-grade-8 Part of: [Indiana: Science](https://ai.page/roadmap/in-sci.md) Goal: Indiana academic standards: Science, Grade 8 ## 1. Engineering Design - [Simple Design Problems](https://ai.page/c/simple-design-problems/index.md): Define a simple design problem reflecting a need or want that includes specified criteria for success and constraints on materials, time, or cost - [Comparing Possible Solutions](https://ai.page/c/comparing-possible-solutions/index.md): Generate and compare multiple possible solutions to a problem based on how well each is likely to meet the criteria and constraints ## 2. Earth's Systems - [Earth's Atmosphere & CO2](https://ai.page/c/earth-s-atmosphere-and-co2/index.md): Describe the composition of Earth's atmosphere (mainly nitrogen and oxygen, with small amounts of CO₂ and other gases), explain how human activity increases CO₂, and describe the impact on global climate - [The Water Cycle](https://ai.page/c/the-water-cycle/index.md): Describe the water cycle, tracing water through evaporation, condensation, precipitation, surface runoff, and transpiration in plants, explaining how the sun drives the cycle ## 3. Biological Evolution: Unity and Diversity - [Variation in Species](https://ai.page/c/variation-in-species/index.md): Explain variation within and between species, distinguishing between continuous variation (e.g. height) and discontinuous variation (e.g. blood group), and between genetic and environmental causes - [Genetic Mutation](https://ai.page/c/genetic-mutation/index.md): Explain genetic mutation as a random change in DNA sequence, describe causes of mutation (e.g. radiation, chemicals, copying errors), and explain that most mutations are neutral, some harmful, and a few beneficial - [How Natural Selection Works](https://ai.page/c/how-natural-selection-works/index.md): Explain natural selection as the mechanism of evolution: heritable variation + competition for resources + differential survival and reproduction = change in allele frequency over generations - [Fossils as Evidence](https://ai.page/c/fossils-as-evidence/index.md): Analyse and interpret data from fossils to provide evidence of organisms and environments that existed long ago - [Evidence for Evolution](https://ai.page/c/evidence-for-evolution/index.md): Describe the main types of evidence for evolution: the fossil record (change over time), comparative anatomy (homologous structures), and the geographic distribution of related species ## 4. From Molecules to Organisms: Structures and Processes - [Plant Reproduction](https://ai.page/c/plant-reproduction/index.md): Describe the structure of a flower and explain the processes of wind and insect pollination, fertilisation, seed and fruit formation, and seed dispersal in plants ## 5. Matter and its Interactions - [Reactions That Release or Absorb Heat](https://ai.page/c/reactions-that-release-or-absorb-heat/index.md): Distinguish between exothermic reactions (release energy, temperature rises) and endothermic reactions (absorb energy, temperature falls), with everyday and industrial examples - [Conservation of Mass](https://ai.page/c/conservation-of-mass/index.md): Measure and provide evidence that the total weight of matter is conserved regardless of the type of change (heating, cooling, or mixing) - [How Materials Change State](https://ai.page/c/how-materials-change-state/index.md): Explain melting, freezing, boiling, condensing, and sublimation using the particle model, interpreting heating and cooling curves to identify melting and boiling points - [Atoms, Elements & Compounds](https://ai.page/c/atoms-elements-and-compounds/index.md): Explain the differences between atoms, elements, and compounds; describe the simple Bohr model of the atom (nucleus with protons and neutrons, electrons in shells); and write and interpret chemical symbols and simple formulae - [Pure Substances & Mixtures](https://ai.page/c/pure-substances-and-mixtures/index.md): Distinguish between pure substances and mixtures, identify formulations as useful mixtures with precise compositions, and use melting and boiling points to test for purity ## Health: 0 of 100 Of its 15 own concepts: 0 have an explanation, 0 have practice, 0 have a measurement question, 0 have a checked version. Findings (each is a task for anyone's AI): - Simple Design Problems has no explanation yet - Comparing Possible Solutions has no explanation yet - Earth's Atmosphere & CO2 has no explanation yet - The Water Cycle has no explanation yet - Variation in Species has no explanation yet - Genetic Mutation has no explanation yet - How Natural Selection Works has no explanation yet - Fossils as Evidence has no explanation yet - Evidence for Evolution has no explanation yet - Plant Reproduction has no explanation yet - Reactions That Release or Absorb Heat has no explanation yet - Conservation of Mass has no explanation yet - How Materials Change State has no explanation yet - Atoms, Elements & Compounds has no explanation yet - Pure Substances & Mixtures has no explanation yet Credit: The structure of Indiana academic standards: Science (https://media.doe.in.gov/news/disciplinary-core-ideas.pdf); concepts from the Marble Skill Taxonomy (v1), © Generative Spark, Inc. (withmarble.com), text CC BY-SA 4.0, database ODbL 1.0: https://github.com/withmarbleapp/os-taxonomy, mapped to its standards by Marble.