Algebra - Solve Simple (Two-step Equations) - Presentation

In the realm of algebra, the lesson on two-step equations is a natural progression from mastering one-step equations. This lesson invites students to delve into the intricacies of equations that require two distinct operations to isolate the variable and solve for its value. The teaching slides present a series of exercises, starting with Activity 1, where students are shown the methodical steps to solve equations like 3x + 2 = 11, transforming it step-by-step into 3x = 9 and finally x = 3. The use of visual aids, such as representing equations with sweets or concrete resources, helps to demystify the process and makes the abstract concept of algebra more tangible.

Further reinforcing the lesson, Activity 2 introduces bar models as a tool for visualising the solution to two-step equations. Students are tasked with writing the algebraic steps that correspond to the visual representation, such as 2x + 5 = 12 becoming 2x = 7 and eventually x = 3.5 after applying the appropriate operations. The lesson also extends to real-world applications with Reasoning 1, where students use their understanding of two-step equations to find the area of a rectangle given its perimeter. In Reasoning 2, the concept of mean is explored through algebraic expression cards. The lesson culminates with independent work that challenges students to apply their learning to various equations, encouraging them to show their workings and solidify their understanding of the two-step equation-solving process.