Here is an editable formal lesson plan in Word format which can be edited and used for formal observations. Concept: Comparing fractions. I use the Engage NY math program, but you can edit this lesson to whatever math program you use.
Mathematicians understand how to compare fractions and can explain the reasonableness of their solutions using pictures, numbers (fractions), and words.
Students will be able to accurately model and label fractional parts of a whole and compare these models to determine which fraction is greater than, less than, or equal to. Students will also be able to explain their mathematical thinking well enough to write written explanations and share their explanations with their small groups.
This lesson will consist of a minilesson, students working in small groups requiring discussions of their work and peer assessments, intervention small groups will be pulled with the teacher, assessment in the form of an exit ticket, and a share at the end of the lesson.
Common Core State Standards Addressed:
Domain: Develop an understanding of fractions as numbers.
Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.
Compare two fractions with the same numerator or the same denominator by reasoning about their size. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.