subjetcs

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Across
  1. 3. I have numbers and symbols; without me, there are no calculations.
  2. 5. I am not the world, but I represent it.
Down
  1. 1. I cannot be seen, but everything is made of me.
  2. 2. I do not speak, but I express feelings with colors.
  3. 3. You cannot see me, but you can hear and feel me.
  4. 4. I am not Spanish, but many countries speak me.
  5. 6. I live in the past but am studied today.