Lead the class in clapping a steady beat. Count 1 to 8 aloud while clapping. Ask students to notice how many claps happen in one count cycle. Introduce the idea that music can be counted and compared.

Clap the beat, count aloud, and answer questions about how many beats they hear or perform.

Explain that a ratio compares two amounts. Write simple examples on the board such as 4 claps : 4 rests, 6 beats : 2 strong beats, or 3 tap patterns : 1 pause. Show how ratios can describe rhythm groups in music.

Listen, copy examples, and repeat the ratio language aloud.

Present 3 to 4 short rhythm patterns using words, symbols, or teacher claps. Example: clap-clap-pause, clap-pause, clap-clap-clap-pause. Ask students to identify what is being compared and write the ratio for claps to rests or strong beats to total beats.

Work in pairs or whole class to count beats, identify parts of the pattern, and write ratios.

Give students a target ratio, such as 2:1, 3:2, or 4:4. In pairs, students create a rhythm that fits the ratio using claps, taps, or desk beats. Circulate and support counting and correct use of ratio language.

Design a rhythm pattern that matches the assigned ratio, rehearse it, and prepare to perform it.

Invite a few pairs to perform their rhythm. Ask the class to identify the ratio they think the pattern shows and justify their answer.

Perform or listen, then explain how the rhythm matches the ratio.

Review: a ratio compares quantities, and music often uses repeating groups of beats. Restate one example from the lesson and ask students to say one thing ratios help musicians do.

Respond orally or in writing with one sentence about ratios in music.