Why is that when we teach our students about numbers, we show them the number one visually. We hold up one finger and maybe place one object in front of them. But when we teach them new vocabulary, we rarely start with the visual--instead we begin with the written word and then move to the visual...maybe. In math we move from concrete to abstract but we rarely do that with other content areas.
Research indicates that our brains process visuals 60,000X faster than text. Why are we reluctant to tap into that and use it to our advantage in the classroom?
Have you ever baked cookies in the oven without preheating the oven first and expected them to be finished within the same time the directions said? Do you remember how they came out? I've done this before because I was too impatient to wait for the oven to preheat. My cookies were raw...not finished, mushy...If I wanted them to taste right, they would need to stay in the oven longer.
I would like to argue that when we don't build background for students, we are essentially doing the same thing.