Start with a wider view
The National Museum brings archaeology, ethnography and art into one visit. That makes it a useful early stop if your Ghana itinerary includes several regions and you want more context before travelling. It can help you arrive at later sites with better questions.
Choose one thread to follow, such as everyday objects, artistic materials or how displays explain the past. Trying to remember every label usually produces a less satisfying visit.
Leave room for questions
Ask which exhibitions are currently open and whether a guide is available. A rotating exhibition may change what you want to prioritise. Don't build the outing around an object shown in an old online photograph without checking.
For children, let each person choose one object to discuss afterwards. That gives the family a shared conversation without turning the museum into a test.
Keep the next stop modest
A meal and a short discussion can be a better follow-up than another large museum. Write down a place or subject you want to investigate during the rest of the trip.
Save the National Museum of Ghana and check the museum's own visitor information before leaving. If your group has access requirements, describe them directly; the word “museum” doesn't tell you about every doorway, step or resting place.