Question 1

Students should include a map key in their classroom maps.

Including a map key is the most developmentally appropriate feature for second-grade students as it helps them understand the symbols used to represent different objects in their maps, facilitating their learning process in map construction.

A) Contour lines

Contour lines are typically used in more advanced mapping techniques to represent elevation or depth and are not suitable for second-grade students. At this developmental stage, children lack the cognitive skills to understand the concept of contour lines in mapping.

B) A scale line

A scale line indicates the relationship between distances on a map and actual distances in the real world. This concept is generally too complex for second graders, who are still grasping basic mapping skills and may not yet understand spatial relationships.

C) A map key

A map key is essential for young learners as it provides a visual representation of symbols and their meanings. Teaching students to use a map key encourages their comprehension and communication skills related to maps, making it the most suitable choice for their developmental level.

D) Grid coordinates

Grid coordinates require an understanding of a coordinate system that second graders are typically not ready to grasp. This concept involves more advanced spatial reasoning and mathematical skills, which are beyond the capabilities of most children at this age.

Conclusion

The inclusion of a map key is crucial for helping second-grade students learn how to interpret and create maps effectively. While options like contour lines, scale lines, and grid coordinates introduce valuable concepts, they are inappropriate for the developmental level of young learners, making option C the clear choice for this exercise.