This interactive journal entry is a excerpt of my problem solving packet based on Greg Tang's method of problem solving. I thought you might like to try a singular part of this larger packet to test and see if it would work for you in your classroom.
A part/part/whole model, or a tape diagram model, is a wonderful tool to help students make sense of problem solving. It works well for single-step and multi-step problems. The key is to teach how the model is structured as well as good vocabulary instruction on the uses of the words part and total. The common part/part/whole model can be made to work with as many parts that make up a total as possible and it can easily relate to number bonds.
My students use this repeatedly in my room to help make sense of problems and I find that I am not asked what operation they should use to solve a problem because they have figured this out on their own. I love this because my students are learning how to think and process focused instead of solution focused.
If you purchase, I would love to know your thoughts and feedback. Happy teaching!