What areas of mathematics and science are assessed in TIMSS?

What areas of mathematics and science are assessed in TIMSS?

Answer:

Mathematics
Grade 4 1. Numbers 2. Geometric shapes and measures 3. Data display
Grade 8 1. Numbers 2. Algebra 3. Geometry 4. Data and chance
Grade 12 1. Algebra 2. Calculus 3. Geometry
Science
Grade 4 1. Life science 2. Physical science 3. Earth science
Grade 8 1. Biology 2. Chemistry 3. Physics 4. Earth science
Grade 12 1. Mechanics and thermodynamics 2. Electricity and magnetism 3. Wave phenomena and atomic/nuclear physics