Find missing angles using angle relationships
When to use this goal
For students who can measure angles but cannot find one without a protractor from the ones around it. Present levels in subtracting from 90, 180 and 360 and in one-step equations decide readiness.
- Baseline
- Score by relationship type; the triangle sum is usually easiest, and transversal angles hardest. Require the relationship to be named so you can tell a reasoning error from an arithmetic error.
- Tips
- Naming the relationship first is the taught habit and keeps the goal about reasoning. A calculator for the subtraction is fine if arithmetic is a separate need.
- Limits
- Does not include angles in polygons beyond triangles or circle angle theorems. Figures are not drawn to scale; students who measure instead of reasoning will be off.
Original IEP Atlas template based on general measurement principles; not copied from any goal bank. ID ma-geo-023.
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Goal
By the annual IEP review date, given 10 figures with one missing angle in a complementary or supplementary pair, in a triangle, or at a point, the student will name the relationship used and write the missing angle measure independently with at least 80% accuracy on missing angle problems, on 3 of 4 consecutive probes, as measured by work-sample analysis collected every two weeks.
Baseline: 25% accuracy.
- Condition
- Observable behavior
- Criterion
- Measurement method
Measurability check11 of 11 met
Met: Observable behavior. Stated as an action.
Met: Condition. Stated.
Met: Unit fits the behavior. Percent accuracy fits this behavior.
Met: Explicit criterion. Number and unit stated.
Met: Mastery rule and schedule. Both stated.
Met: Method produces the metric. Work-sample analysis gives percent accuracy data.
Met: Review timeframe. Stated.
Met: Baseline and target compatible. Same unit, change in the right direction.
Met: Aligned with area of need. Still about Geometry & Spatial Reasoning.
Met: Level of support. Defined.
Met: Blanks filled in. Nothing left to fill in.
Checks structure and wording only. Whether the goal fits the student is the team's call.
Short-term objectives (optional)
When are objectives required?Required for students on alternate assessments (34 CFR §300.320(a)(2)(ii)); some states require them for everyone.
Paste into your IEP system
Most district systems have a separate box for each part of a goal. Copy them one at a time, or all at once as labeled text.
- Area of need
- Math - Geometry & Spatial Reasoning
- Baseline
- 25% accuracy.
- Annual goal383 characters
- By the annual IEP review date, given 10 figures with one missing angle in a complementary or supplementary pair, in a triangle, or at a point, the student will name the relationship used and write the missing angle measure independently with at least 80% accuracy on missing angle problems, on 3 of 4 consecutive probes, as measured by work-sample analysis collected every two weeks.
- Timeframe
- By the annual IEP review date
- Condition
- Given 10 figures with one missing angle in a complementary or supplementary pair, in a triangle, or at a point
- Behavior
- The student will name the relationship used and write the missing angle measure independently
- Criteria
- With at least 80% accuracy on missing angle problems, on 3 of 4 consecutive probes
- Evaluation method
- Work-sample analysis
- Schedule
- Every two weeks
Copied as plain text, with straight quotes and plain dashes.
Matching data sheet
Accuracy tracker. Records number correct and number attempted.
Accuracy tracker
Percent accuracy- Student label:
- Target:
- with at least 80% accuracy on missing angle problems
- Mastery rule:
- on 3 of 4 consecutive probes
- Collection schedule:
- every two weeks
- Method:
- Work-sample analysis
- Data collector:
Goal: By the annual IEP review date, given 10 figures with one missing angle in a complementary or supplementary pair, in a triangle, or at a point, the student will name the relationship used and write the missing angle measure independently with at least 80% accuracy on missing angle problems, on 3 of 4 consecutive probes, as measured by work-sample analysis collected every two weeks.
| Date | Task / materials | # correct | # attempted | % accuracycorrect ÷ attempted × 100 | Support levele.g., independent, 1 verbal prompt | Notes |
|---|---|---|---|---|---|---|
Preview shows 4 of 12 rows.
- Score only items the student attempted unless the goal defines a fixed set of items. Use the same denominator every session.
- Percent = numerator ÷ denominator × 100. Round to one decimal place.
- Record the support actually provided, even if the goal is independent performance.
The CSV opens in Excel or Google Sheets, with formulas. Sheets print blank; no student data is stored.