Approximations
Outcomes
In this lesson you will learn about:
- Rounding off numbers.
- Estimating answers to calculations.
Outcomes
In this lesson you will learn about:
This YouTube video explores the concepts of approximations and estimations.
Outcomes:
The idea of the electric field, how it's useful, and explains how the electric field is defined.
Forces at a distance are explained by fields (gravitational, electric, and magnetic) permeating space that can transfer energy through space. Magnets or electric currents cause magnetic fields; electric charges or changing magnetic fields cause electric fields.
Magnetism is an interaction that allows certain kinds of objects, which are called ‘magnetic’ objects, to exert forces on each other without physically touching. A magnetic object is surrounded by a magnetic ‘field’ that gets weaker as one moves further away from the object. A second object can feel a magnetic force from the first object because it feels the magnetic field of the first object. The further away the objects are the weaker the magnetic force will be.
Video 1: Introduces the concepts of points, lines, rays and line segments
Video 2: Provides examples of points, lines, line segments and rays
Video 3: Common mistakes made
This online activity is a math game on rounding numbers.
This is an online activity that provides you with various exercises on rounding whole numbers.