<p>This <a href="https://www.geogebra.org/m/b8qyhcvk" target="_blank" rel="nofollow">geogebra lesson </a>and accompanying worksheet allows students to interactively investigate the effect of changing the gradient and intercept parameters in the straight line equations y=mx+c.</p>

<p>A short brochure to introduce variables, expressions and basic simplifying.</p> <p>Worked examples are given. I used this as a support hand out for students struggling with basic algebraic concepts.</p>