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ELEMENTS I Teacher Manual

STERK Engels Teacher Manual Elements I

Exercise Overview Task

Exercise Overview Task In Ocean Explorer, students listen to frequency-modulated sweep sounds that change their pitch, going from low to high (an up sweep or “Weep”) or from high to low (a down sweep or “Woop”). Many speech sounds (phonemes) include sweeps. For example, to distinguish /b/ from /d/, one must be able to distinguish and recognize the sweep components of those speech sounds. Ocean Explorer begins with single sweeps, then progresses to paired sweeps. Students must click the Go button to hear a sweep or a pair of sweeps. If they hear a single sweep, they must click the up or down arrow to match that sound. If they hear a pair of sweeps, they must click the up and down arrows in the right order to match the pattern of sounds. While students work through the exercise, the screen shows a distorted image overlaid with a grid. At first, the image is completely obscured. Each time students get three correct answers in a row, cells within the grid reveal a clearer image. If students get answers incorrect, cells may revert to the distorted image. On this journey, you will listen for sounds like “Weep” and “Woop.” Click the Go button to hear the sounds. “Weep” Hear that? That was “Weep.” These sounds go up. For “Weep,” click the up button. Icon Key Audio Download English Learner Quick Check Settings Video 20 Elements I Teacher Manual

Exercise Overview Content As students progress in Ocean Explorer, the exercise presents paired sweeps that change in frequency, duration, and inter-stimulus interval (ISI—the between the paired sweeps). Frequency: Each frequency sweep starts at a base frequency, measured in Hertz (Hz) or cycles per second. The exercise rotates through three base frequencies, to promote generalization to natural human speech. • Low (500 Hz) • Middle (1000 Hz) • High (2000 Hz) Duration: Each frequency sweep also varies in length or duration, measured in milliseconds (ms). As students progress, they move from longer to shorter sweeps, which increases the difficulty of the task. Changes to the sweep duration push the brain to process very rapid transitions, such as those found in natural speech. • 80 ms • 60 ms • 40 ms • 35 ms • 30 ms Inter-stimulus Interval (ISI): When a pair of frequency sweeps is presented, there may be a silent pause or gap between the two. This gap is also known as the inter-stimulus interval or ISI, and it is measured in milliseconds (ms). As students progress, the gap gets shorter (dropping from 500ms to 0ms—no gap at all). This increases the difficulty of the task. Changes to the ISI push the brain to process sounds more rapidly. Ocean Explorer Progression The task changes and gets more difficult in several ways: • At first, students start by working through introductory levels that provide instructions, modeling, and supports (audio feedback and/or visual cues) to introduce the frequency sweeps and the tasks. As students progress through the introductory levels, the supports are gradually removed. • In the standard levels, within each base frequency, students advance through 5 sets with progressively shorter durations. Within each set, students advance through 45 stages with progressively shorter ISIs. This progression challenges students to improve their rate of auditory processing. • Ocean Explorer adapts to students’ performance. If students are doing well, they may skip some stages; if they are struggling, they may need to work on more of the stages. If a student gets stuck for an extended period, they may be shifted to work on a different frequency or provided with targeted practice. Elements I Teacher Manual 21