This interactive PowerPoint activity helps students understand two-digit addition within 100 using a clear and visual number line approach. By separating tens and ones, learners can see each step of the addition process and build strong number sense. ✳️ How it works: Students solve each task using two number lines: • First, they click to add the tens on the first number line • Next, they add the ones on the second number line • Finally, they select the correct answer by choosing the tens and