Aluminum and magnesium antacids work quickly to lower the acid in the stomach. Liquid antacids usually work faster/better than tablets or capsules. This medication works only on existing acid in the stomach. It does not prevent acid production.
If you plan to become a professional curriculum designer, you will generally need to have a teaching degree and a master's degree in education. If you want to remain a teacher and design curriculum for your own students, look into continuing education courses that can help you get started.
Definitely, students have to be involved in curriculum planning. The final decisions are made by the faculty and the Dean, but students' feedback is encouraged along the way. Program graduates are also a very important source of information for curricular design.