Health Sciences 2801A/B Lecture Notes - Lecture 1: Celsius, Irrational Number, Linear Continuum

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2801A/B
• Professor: Christopher Lee

Document Summary

Reading 1 numbers and words lecture. Children know at an early age that numbers are something used to count: they understand one and two are numbers, red and blue are not. In school, we learn different families of numbers: natural numbers (cid:1005),(cid:1006),(cid:1007), , no 0, numbers that are used to count, whole numbers (cid:1004),(cid:1005),(cid:1006),(cid:1007), . I(cid:374)tege(cid:396)s -3, -2, -1, 0, 1, 2, 3: adding negative counterparts to whole numbers. These (cid:374)u(cid:373)(cid:271)e(cid:396)s a(cid:396)e used to (cid:272)ou(cid:374)t (cid:862)(cid:272)ou(cid:374)ta(cid:271)le(cid:863) thi(cid:374)gs, like fish : although many things are not countable, water is not a countable thing it does(cid:374)"t (cid:272)o(cid:373)e i(cid:374) u(cid:374)its; it is (cid:272)o(cid:374)ti(cid:374)uous. A(cid:374)othe(cid:396) (cid:449)ay to thi(cid:374)k of a (cid:374)u(cid:373)(cid:271)e(cid:396) is as a poi(cid:374)t o(cid:374) a li(cid:374)ea(cid:396) (cid:272)o(cid:374)ti(cid:374)uu(cid:373) o(cid:396) (cid:862)(cid:374)u(cid:373)(cid:271)e(cid:396) li(cid:374)e(cid:863: this continuum is the family of real numbers. Irrational number does not end or repeat a sequence of digits (e. g. = (cid:1007). (cid:1005)(cid:1008) ) Natural numbers, whole numbers and integers are used for counting.