1. **State the problem:** A teacher buys 24 notebooks and 24 packs of pencils for 24 students. Each notebook costs 4 and the total spent on notebooks and pencils is 220. 2. **Define variables:** Let $p$ be the cost of one pack of pencils. 3. **Write the equation:** The total cost for notebooks is $24 \times 4 = 96$. 4. The total cost for pencils is $24 \times p$. 5. The total spent is the sum of the cost of notebooks and pencils, which equals 220. 6. So, the equation modeling the situation is: $$24 \times 4 + 24 \times p = 220$$ or simplified: $$96 + 24p = 220$$