During EDUC 499 and my student teaching placements I was required to complete task 3 of the edtpa. Through this I was required plan and teach a learning segment to students using mathematical practices that I thought would give students the best chance of understanding the material. The learning segment I chose was Least Common Denominator, Adding Rational Expressions, and Subtracting Rational Expressions. This learning segment allowed students to build on prior knowledge of Least Common Denominators, and Adding and Subtracting fractions to then be able to apply this prior knowledge to Rational Expressions.  I was also required to give my students an assessment during my learning segment and be able to respond with feedback and take data collected from the assessment to determine my next steps of teaching for the students. The assessment I chose was an exit ticket that students were to work on at the end of the lesson and turn back into me. This more informal assessment allowed me to monitor learner progress because the students completed the exit ticket right after the lesson so it showed how well the students initially understood the lesson.  This learning segment was based on Jean Piaget’s idea of Schema Theory where in the next lesson students would use the ideas of the previous lesson, and prior knowledge of finding Least Common Denominators and Adding and Subtracting Fractions to help them on the new topics of Adding and Subtracting Rational Expressions. Through my analysis of my assessment I determined that moving to the next lesson would challenge the students who understood the lesson to try these procedures on more complex problems, but I will still be able to check the understanding of students that may have been confused about the previous lesson and make sure they understand the procedures shown.