# Sound Detective: Build a Four-Beat Rhythm **Status:** Free sample · Grades 3–5, with younger-child adaptations **Duration:** 20-minute core; first 10-minute extension makes 30 minutes total; all three 10-minute extensions make 50 minutes total. **Objective:** Students create and perform a four-beat rhythm using one sound, two even sounds, and one silent beat. ## Materials - This lesson and its printable rhythm cards. - A board or display for the classroom prompts; if printing is unavailable, draw the rhythm cards and four beat boxes. - No instruments or special equipment. ## Core lesson ### 0:00-2:00 | Welcome and listening signal Purpose: Set a calm routine and introduce the sound-detective challenge. - Teacher: Today we will listen for a pattern, copy it, and make one of our own. We do not need instruments; our voices and hands are enough. - Teacher: When I say "Sound detectives," place your hands still on your knees and look toward the rhythm cards. Let us try it once. - Teacher: Sound detectives. Thank you. Our goal is to make four steady beats that another person can follow. Students: Respond to the attention cue. Choose a seated knee tap or a quiet clap for the activity. Check: Everyone has a comfortable, instrument-free way to participate. ### 2:00-5:00 | Model the three rhythm sounds Purpose: Hear the difference between one sound, two even sounds, and one silent beat. - Teacher: TA is one sound across one beat. Copy me: TA. Now count four steady beats with me: 1, 2, 3, 4. - Teacher: TI-TI is two even sounds inside one beat. Listen first, then echo: TI-TI. We still count that space as beat 1. - Teacher: REST means one quiet beat. Keep the count moving inside your head while your hands stay still: 1, 2, 3, 4. - Teacher: I will show a card before we perform it. Our sound stays soft enough for everyone to hear the count. Students: Echo each cue once. Tap or clap TA and TI-TI; show REST by keeping hands still while silently counting. Check: Students distinguish the silent beat from stopping the whole count. ### 5:00-9:00 | Listen, echo, and switch Purpose: Practice reading a short pattern while keeping the pulse steady. - Teacher: Watch the four cards. I will perform the pattern once. Listen without copying: TA, TA, TI-TI, REST. - Teacher: Now echo it with me. Keep four beats in your count: 1, 2, 3, 4. - Teacher: This time, I will point to each card and you will perform. If you lose your place, rejoin on the next beat. - Teacher: Turn to a partner. One person points to the cards; the other performs. Then switch jobs. Students: Echo the model, perform from the visual cards, then take turns pointing and performing with a partner. Check: Listen for four counted beats and a quiet, intentional REST. ### 9:00-14:00 | Make a four-beat pattern Purpose: Compose a repeatable pattern with a clear beginning and ending. - Teacher: Your group will choose four cards, one for each beat. You may repeat a card. Make sure your pattern has four beats total. - Teacher: First point and count the four spaces. Next, practice the pattern quietly. Then choose who points and who performs. - Teacher: If your pattern uses TI-TI, fit both sounds evenly into that one beat. If you choose REST, keep the beat going silently. - Teacher: Freeze, hands still, eyes up. Check your four spaces. Make one change if your group wants a new sound order. Students: Arrange four cards in a row, count the spaces, rehearse, and choose a pointer and performer. A student may do both roles. Check: Every group has four spaces and a pattern it can perform together. ### 14:00-18:00 | Share and listen Purpose: Perform a student-created pattern and listen for its structure. - Teacher: Performers, point to each beat as you play your pattern. Listeners, keep the count silently and notice one sound choice. - Teacher: Let us count together: 1, 2, 3, 4. Thank you. Listeners, show one finger if you heard a REST. - Teacher: I noticed your group kept the beat moving through the quiet space. That helped the pattern stay together. - Teacher: We will hear one more pattern. Our audience rule is eyes on the pointing hand and quiet hands until the ending. Students: Selected groups perform. Listeners silently count four beats and signal whether they heard a REST. Check: The listener response gives the performer useful evidence without ranking groups. ### 18:00-20:00 | Quick assessment and close Purpose: Check each learner can make and explain a four-beat pattern. - Teacher: On your four-box strip, draw or place four rhythm cards. Point to each box and count 1, 2, 3, 4. - Teacher: Show me your REST with still hands. Tell me how you keep the beat going during the quiet space. - Teacher: Before we finish, name one sound you used and one thing you would change next time. Students: Complete a four-box pattern, point and count it, then show or say where the silent beat occurs. Check: Use the quick assessment below to decide who is ready to extend and who needs another model. ## Extensions ### 20:00-30:00 | Add a sound level choice (10 min) Teacher: Keep the same four-beat pattern. Choose soft or a comfortable speaking level; no shouting. First perform it at one level, then change only the sound level. Listeners, keep a quiet four-beat count and name the level you heard. Switch roles and try both levels again. Students: Perform the same pattern at two comfortable levels, keep the pulse steady, identify the difference, and switch pointer and listener roles. ### 30:00-40:00 | Create a contrasting version (10 min) Teacher: Change one card to make a new version. Point to the changed beat and tell your partner what changed before you perform. Rehearse both versions, keeping the count and every unchanged beat steady. Switch roles so each partner can make or lead a change. Students: Revise one card, rehearse and compare the original and new pattern, then switch roles and describe the changed beat. ### 40:00-50:00 | Perform and reflect (10 min) Teacher: Perform both versions for a partner or small group. Listeners, identify the changed beat and keep the count through any REST. Composers, tell us how the change affected the pattern and which choice made the contrast easiest to hear. Students: Share both versions, listen for the changed beat, and explain one choice that made the contrast easy to hear. ## Assessment - Four-beat count: student points to or names four spaces in order without skipping a box. - Rhythm meaning: student shows one sound for TA, two even sounds within one beat for TI-TI, and one silent beat for REST. - Steady pulse: student continues the count by voice, finger point, or silent tracking during REST. Have partners point to their own four-box strip while the teacher circulates and listens for the three checks. A student who meets all three is ready to extend. If the count breaks at REST, model a two- or three-box pattern and rebuild to four. ## Curriculum evidence See Curriculum-Alignment.md for exact source paths, supporting text, scope limits, and unverified connections. ## Audio No audio file is supplied. See Audio-Guide.txt for live modeling cues.