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.
When you design a syllabus for any course, you begin with the outcomes that you intend for your students to achieve, and you work backwards from these to particular readings and writing assignments. This method, formalized, is called the method of backward design.