Contrast how summative assessment differs from formative assessment, insofar as being a ‘constant reading’ of students’ ability and learning. How can teach

Contrast how summative assessment differs from formative assessment, insofar as being a "constant reading" of students' ability and learning. How can teachers apply formative assessment to guide instruction, and how could happen if a teacher fails to do so? What are some examples of formative assessment that can be used every day in your instruction? Cite at least one source to support your 300-word response.