Mr. Waller's students are working in cooperative groups. Just prior to the transition to the next activity, which will require each student to use colored pencils and scissors, Mr. Waller rings a small bell. He tells the children that they have two minutes to finish up what they're doing. Mr. Waller's strategy is:

scaffolding

Explanation:

In simple words, Educational scaffolding can be understood as the method under which a teacher provides supports to learners' education in order to help them accomplish tasks. The instructor accomplishes this by expanding on the pupils' prior encounters and understanding as they acquire new abilities. Thus, from the above we can conclude that the correct answer is scaffolding.

d.

thist title points out that you are explaining the nature of the u.s. government. it is the most specific. a representative government consists of a government where decisions are taken according to a voting system. the most essential aspect of a representative government is found in the different structures where voting rights are granted to different groups of people. for example, voting for governor, mayor, president, local police chief etc.