# After year 9: Mathematics

A course roadmap (maths). Language: en. By @si. Licence: CC BY-SA 4.0. 0 of 4 concepts ready. In the app: https://ai.page/roadmap/no-lk20-mat-after-year-9

Part of: [LK20: Mathematics](https://ai.page/roadmap/no-lk20-mat.md)

Goal: Kunnskapsløftet 2020 (LK20), Mathematics: competence aims, years 1–10, After year 9

## 1. Mathematics

- [Compound Units](https://ai.page/c/compound-units/index.md): Use compound units such as speed (distance ÷ time), unit pricing (cost ÷ quantity), and density (mass ÷ volume); solve problems involving compound units
- [Properties of triangles and quadrilaterals](https://ai.page/c/properties-of-triangles-and-quadrilaterals/index.md): Derive and illustrate properties of triangles, quadrilaterals, and circles using appropriate language, including interior angles, diagonals, symmetry, and relationships between side lengths
- [Angles in triangles (age 11+)](https://ai.page/c/angles-in-triangles-age-11/index.md): Derive and apply formulae for the area of triangles, parallelograms, and trapezia, and for the volume of cuboids and other prisms (including cylinders), connecting each formula to its geometric reasoning
- [Comparing measurements](https://ai.page/c/comparing-measurements/index.md): Describe, interpret, and compare distributions of a single variable using appropriate measures of central tendency (mean, median, mode) and spread (range), including the effect of outliers

## Health: 0 of 100

Of its 4 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):

- Compound Units has no explanation yet
- Properties of triangles and quadrilaterals has no explanation yet
- Angles in triangles (age 11+) has no explanation yet
- Comparing measurements has no explanation yet

Credit: The structure of Kunnskapsløftet 2020 (LK20), Mathematics: competence aims, years 1–10 (https://www.udir.no/lk20/mat01-06); 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.