______ is a teaching technique that focuses on the investigation of real-world problems using mathematics as a tool to make sense of the situation and map out possible solutions.

Correct option is B

The correct answer is (b) Mathematical modeling method
Explanation:
Mathematical modeling involves creating a simplified mathematical representation (a model) of a real-world scenario to understand it and make predictions. It shifts math from an abstract exercise to a powerful tool for solving complex problems in economics, science, and social policy.
Information Booster:
● Translation: The process of translating a real-world problem into mathematical symbols and equations.
● Validation: After solving the math, the results must be checked against the real-world situation to see if they make sense.
● Interdisciplinary: Modeling often requires knowledge from other fields like Physics, Biology, or Sociology.
● Critical Thinking: Students must decide which variables are important and which can be ignored in their model.
● Solution Mapping: It helps in identifying the best course of action by analyzing different mathematical outcomes.
Additional Points:
● Option (a): Instructional design – The 5E model (Engage, Explore, etc.) is a general pedagogical framework, not specific to math tools.
● Option (c): Teacher-centered – This involves showing students how to do something, rather than their own investigation.
● Option (d): Developmental model – CRA (Concrete-Representational-Abstract) is a sequence for learning basic concepts, not a problem-solving tool.

So the correct answer is (b)