Which tool is least likely suggested for solving problems according to the icons discussed?

The tool that is least likely suggested for solving problems is the calculator. In educational settings that emphasize comprehension and problem-solving skills, such as Mathnasium, there tends to be a focus on foundational understanding and mental math strategies. Using a calculator can sometimes lead to over-reliance on technology rather than encouraging students to develop their arithmetic skills and understanding of mathematical concepts.

On the other hand, desk tools, pencil and paper, and visual aids are commonly recommended because they allow students to visualize problems, organize their thoughts, and work through calculations manually. These tools foster a deeper comprehension of the material, which is crucial for building a strong mathematical foundation. Engaging with the problem directly using these methods encourages critical thinking and enhances retention of mathematical concepts, demonstrating the importance of manipulating numbers and expressions without immediate technological assistance.