In Junior Secondary School 1 (JSS1), students begin their mathematics journey by building a foundation of fundamental mathematical concepts. Here are some key topics typically covered in JSS1 mathematics:
 
1. Number System: Introducing and understanding the number system, including natural numbers, whole numbers, integers, fractions, decimals, and percentages. Students learn about place value, comparing and ordering numbers, and basic operations like addition, subtraction, multiplication, and division.
 
2. Basic Algebra: Introduction to algebraic concepts such as variables, constants, and coefficients. Students learn to evaluate and simplify algebraic expressions, solve simple equations, and apply basic algebraic rules.
 
3. Geometry: Basic geometric concepts, including lines, angles, triangles, quadrilaterals, and circles. Students learn to identify and classify shapes, measure angles, calculate perimeter and area, and explore symmetry.
 
4. Measurements: Introduction to units of measurement, including length, mass, capacity, and time. Students learn to convert between different units, estimate measurements, and solve problems involving measurement.
 
5. Data Handling: Introduction to data representation and analysis. Students learn to collect, organize, and represent data using tables, graphs, and charts. They also explore basic concepts of probability.
 
6. Patterns and Sequences: Identifying and analyzing patterns and sequences, including number patterns, geometric patterns, and arithmetic sequences. Students learn to extend and find missing terms in sequences.
 
7. Basic Statistics: Introduction to statistical concepts, including mean, median, mode, and range. Students learn to interpret and analyze data sets using statistical measures.
 
8. Word Problems: Solving word problems that involve real-life scenarios, which require applying mathematical concepts and operations to find solutions.
 
It’s important to note that the specific curriculum may vary depending on the educational institution and location. However, these topics generally form the foundation of mathematics in JSS1 and provide the basis for further mathematical learning in subsequent grades.