Mathematics 1 ESO – Unit 1 NATURAL NUMBERS extra activities
1 – Watch the video on “What’s an Inequality?” and answer:
- a) What are the inequality symbols?
- b) What is the difference between “<” and “≤”?
- c) What is the “big property about inequalities”?
- d) 5 ≤ x ; can we write it as x ≥ 5? Why?
- e) Write with numbers and symbols:
- I) Four is greater than two.
- II) One orange is less than ten oranges.
- III) One orange is equal or less than ten oranges.
- IV Three apples plus four apples is more than five apples.
2 – Watch the video on “Ancient Number Systems Part 1” and answer:
- a) In the Ancient Egyptian Number System, what is represented by the “arch hieroglyph”?
- b) Why in the Ancient Egyptian Number System we represent “132” as one “coil of rope”, three “arches” and two “sticks”?
- c) Represent “215” in the Ancient Egyptian Number System.
3 – Watch the video on “Ancient Number Systems Part 2” and answer:
