School objects

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Across
  1. 2. Geometry, Algebra, Calculus and fractions are part of this subject(11)
  2. 4. Used to write in primary school(6)
  3. 6. Used to carry water to school(11)
  4. 7. instructors(8)
Down
  1. 1. Pens, pencils, scales are all known as ______________ (10)
  2. 3. Something like a craft class(10)
  3. 5. The language we mainly use at school, also a subject.(7)