11.1 Backward Chain Template S’mores Pantry Learners Handout 11.1 Backward Chain Template Marshmallows Beg Purchase ----------- End Assembly Grill Beg Assemble ----------- End Beg  Cook ----------- End  To assembly  To grill  To table Graham crackers Beg Purchase ----------- End  To assembly Chocolate squares Beg Purchase ----------- End Activity Step 2: Demonstration problem: Planning for materials purchases Students should have a full-size copy of this slide. Room has been provided so that they can work the algebra equations on the slide. The bill of materials means that we will need one inventory account for each type of raw material that goes into the finished product. If using the Smart Board in the classroom: To fill each of the colored squares, click on the square, and type the number that the class has determined belongs in the square. The colors of the squares should help students to determine the source of the number from the backward chaining exercise.  To assembly