Block Busting SlidesBlock Busting Circle & Cross Out Challenge I Do #1 Teacher Demonstration Look at these circles! 1 Circle 4 2 Cross out 3 I Do #2 Look at these squares! 1 Circle 6 2 Cross out 5 We Do #1 Let's Try on the Board! Help me with these triangles! 1 Circle 7 2 Cross out 4 We Do #2 Paper & Board! Find Question #1 on your paper! Let's do it together. Circle 5 Cross out 2 Wait for the teacher's signal before you start! You Do! Your Turn to be a Shape Detective! Finish the next 5 problems on your own. Keep counting carefully!
Block Busting WorksheetBlock Busting! Circle & Cross Out Challenge Name: Date: 1 We Do Together Circle 5 Cross out 2 2 You Do! 2 Circle 8 Cross out 3 3 Circle 6 Cross out 4 4 Circle 4 Cross out 9 5 Circle 11 Cross out 3 6 Circle 7 Cross out 5
Block Busting Teacher GuideBlock Busting: Facilitation Guide 2-Step Counting & Set Manipulation (K.CC.4) Objective Students will demonstrate counting cardinality (K.CC.4) by interacting with a set of objects through two distinct steps: circling a specific quantity and crossing out another specific quantity. Materials Block Busting Slide Deck Block Busting Worksheet (1 per student) Pencils & Whiteboard Markers Lesson Pacing Phase 1 I Do: Teacher Modeling (Slides 2-3) Focus: Modeling the 2-step process clearly. Project Slide 2. Count the 10 circles aloud with the class. Demonstrate circling 4 circles. Use a marker on the board. Demonstrate crossing out 3 circles (these can be different circles or some of the circled ones, depending on your goal). Repeat for Slide 3 with 14 squares. Phase 2 We Do: Guided Practice - Board Only (Slide 4) Focus: Student participation with teacher support. "Who can come up and help me find 7 triangles to circle?" Invite one student to circle 7 triangles. Invite a second student to cross out 4 triangles. Check for understanding by counting the groups together. Phase 3 We Do: Guided Practice - Paper & Board (Slide 5) Focus: Transition to independent work. Direct students to Question #1 on their worksheet. Give the first command: "Circle 5 rectangles." Observe. Give the second command: "Cross out 2 rectangles." Observe. Review the answers on the board slide together. Phase 4 You Do: Independent Practice (Slide 6) Focus: Individual mastery. Students complete Questions 2-6 independently. Circulate to check for: Correct counting (one-to-one correspondence). Ability to follow the 2-step sequence. Accuracy in identifying the specific quantity requested. Answer Key Quick-Reference Q1 (Guided) Circle 5 / Cross 2 Q2 (Stars) Circle 8 / Cross 3 Q3 (Triangles) Circle 6 / Cross 4 Q4 (Hearts) Circle 4 / Cross 9 Q5 (Circles) Circle 11 / Cross 3 Q6 (Diamonds) Circle 7 / Cross 5