1. Understanding of numbers: including understanding and comparison of integers, decimals and fractions, as well as the order and size relationship of numbers.
2. Four operations: the basic concepts and operation rules of addition, subtraction, multiplication and division, as well as simple application problems.
3. Quantitative relationship: including the concepts of quantitative comparison, multiple, divisor and factor, as well as simple application problems.
4. Geometry: including the concepts of point, line, surface and body, as well as the properties and classification of simple geometry.
5. Measurement: including basic concepts such as length, area, volume and weight, as well as simple measurement methods and unit conversion.
6. Data processing: including data collection, collation, representation and analysis, as well as simple chart making and interpretation.
7. Logical reasoning: including simple logical reasoning and judgment, as well as methods and strategies to solve problems.
8. Application problem: through the problems in real life, cultivate students' ability to use what they have learned to solve practical problems.
9. Arithmetic problems and puzzles: Cultivate students' logical thinking ability and interest in mathematics by solving arithmetic problems and puzzles.
10. Oral calculation and mental calculation: through a large number of oral calculation and mental calculation exercises, students' calculation speed and accuracy are improved.
In short, the knowledge of mathematics in grade three covers the cognition of numbers, four operations, quantitative relations, geometric figures, measurement, data processing, logical reasoning and other aspects, aiming at cultivating students' basic mathematical literacy and problem-solving ability.