two-stage method
nounUK /ˌtuː ˈsteɪdʒ ˈmeθəd/
US /ˌtu ˈsteɪdʒ ˈmɛθəd/
A way of doing something in two separate steps, one after the other.
We used a two-stage method to build the model: first we drew the plan, then we built it.
OTHER MEANINGS
2. A rocket that has two separate parts that fall away as it flies.
The two-stage method let the rocket drop its empty tank and keep going.
3. A way of teaching or testing where learners first practice, then are checked.
The teacher used a two-stage method: practice first, quiz later.
4. A way of solving a math problem by doing one calculation, then another.
We solved it with a two-stage method: add first, then multiply.