# 2º ano: Mathematics

A course roadmap (maths). Language: en. By @si. Licence: CC BY-SA 4.0. 0 of 17 concepts ready. In the app: https://ai.page/roadmap/br-bncc-ma-2o-ano

Part of: [BNCC: Matemática](https://ai.page/roadmap/br-bncc-ma.md)

Goal: Base Nacional Comum Curricular (BNCC), Ensino Fundamental: Matemática (Mathematics), 2º ano

## 1. Mathematics

- [Comparing Large Numbers](https://ai.page/c/comparing-large-numbers/index.md): Order and compare numbers beyond 1000
- [Counting objects to 20](https://ai.page/c/counting-objects-to-20/index.md): Count a set of objects to answer 'how many?' for sets up to 20 (arranged in lines, arrays, circles, or scattered)
- [Comparing groups: more or fewer](https://ai.page/c/comparing-groups-more-or-fewer/index.md): Compare two groups of objects to determine which has more, fewer, or whether they are equal, using matching and counting strategies
- [Mental addition and subtraction (age 6+)](https://ai.page/c/mental-addition-and-subtraction-age-6/index.md): Add and subtract a two-digit number and ones mentally and using concrete/pictorial representations
- [Mental and written addition and subtraction](https://ai.page/c/mental-and-written-addition-and-subtraction/index.md): Solve addition and subtraction problems using mental and written methods, including problems involving numbers, quantities, and measures
- [Multiplication as repeated addition (age 6+)](https://ai.page/c/multiplication-as-repeated-addition-age-6/index.md): Solve problems involving multiplication and division using arrays, repeated addition, mental methods, and known facts
- [Patterns & Sequences](https://ai.page/c/patterns-and-sequences/index.md): Order and arrange combinations of mathematical objects in patterns and sequences
- [Describing Movements](https://ai.page/c/describing-movements/index.md): Describe movements between positions as translations of a given unit to the left/right and up/down
- [3-D shapes](https://ai.page/c/3-d-shapes/index.md): Recognise and name common 3-D shapes (cubes, cuboids, pyramids, spheres, cylinders, cones)
- [2-D shapes](https://ai.page/c/2-d-shapes/index.md): Recognise and name common 2-D shapes (circles, triangles, rectangles including squares)
- [Estimating Lengths](https://ai.page/c/estimating-lengths/index.md): Estimate lengths using units of inches, feet, centimetres, and metres
- [Calculating with measurements](https://ai.page/c/calculating-with-measurements/index.md): Measure, compare, add, and subtract lengths (m/cm/mm), mass (kg/g), and volume/capacity (l/ml) using standard units
- [Days, Weeks, Months & Years](https://ai.page/c/days-weeks-months-and-years/index.md): Recognise and use language relating to dates, including days of the week, weeks, months, and years
- [Telling time to the minute (age 8+)](https://ai.page/c/telling-time-to-the-minute-age-8/index.md): Tell and write time to the nearest minute using analogue and digital clocks
- [Likelihood Language](https://ai.page/c/likelihood-language/index.md): Use probability language to describe and compare the likelihood of everyday events using words such as certain, likely, even chance, unlikely, impossible
- [Bar graphs](https://ai.page/c/bar-graphs/index.md): Interpret and present discrete and continuous data using appropriate graphical methods, including bar charts and time graphs
- [Sorting Data into Categories](https://ai.page/c/sorting-data-into-categories/index.md): Organise and represent data with up to three categories by counting objects in each category and sorting categories by quantity

## Health: 0 of 100

Of its 17 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):

- Comparing Large Numbers has no explanation yet
- Counting objects to 20 has no explanation yet
- Comparing groups: more or fewer has no explanation yet
- Mental addition and subtraction (age 6+) has no explanation yet
- Mental and written addition and subtraction has no explanation yet
- Multiplication as repeated addition (age 6+) has no explanation yet
- Patterns & Sequences has no explanation yet
- Describing Movements has no explanation yet
- 3-D shapes has no explanation yet
- 2-D shapes has no explanation yet
- Estimating Lengths has no explanation yet
- Calculating with measurements has no explanation yet
- Days, Weeks, Months & Years has no explanation yet
- Telling time to the minute (age 8+) has no explanation yet
- Likelihood Language has no explanation yet
- Bar graphs has no explanation yet
- Sorting Data into Categories has no explanation yet

Credit: The structure of Base Nacional Comum Curricular (BNCC), Ensino Fundamental: Matemática (Mathematics) (https://basenacionalcomum.mec.gov.br/); 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.