Place Value within 20 - Compare groups of objects - Presentation

In the educational presentation focused on place value within 20, students are invited to develop their understanding of comparing groups of objects. The lesson is structured around the concept of greater than and less than, with students using their skills in finding differences between quantities. Through a series of engaging activities, learners are encouraged to observe groups of objects and determine which group is greater or lesser, and by how many. The initial discussion sets the stage for the lesson, prompting students to consider what it means for one group to be greater than or less than another.

Activities within the presentation guide students through practical applications of comparison. They are challenged to visually assess groups of objects, such as cubes and strawberries, and then use their counting skills to quantify the difference. The lesson further reinforces these concepts with the introduction of inequality symbols, encouraging students to express their comparisons using mathematical notation. Interactive exercises, such as creating numbers on a bead string and comparing them, allow students to work collaboratively and solidify their understanding. The presentation culminates in reasoning tasks and independent work, where students circle groups with the most blocks, complete sentences with comparative phrases, and use comparison symbols to indicate which group has the most beads.