
Add & Subtract Fractions with Like Denominators | 3rd - 4th Grade
- Clear explanation of adding and subtracting fractions with like denominators
- Use of real-world examples (pizza, pie) to aid understanding
- Engaging musical format to maintain interest
@numberockllc · A parent-focused assessment based on a sample of recent and popular public long-form videos, not a review of every upload.
Choose an age range.
Numberock scores 99 out of 100 for ages 8-10. The sampled videos produced a high score using the ages 8-10 rubric, with relatively few observed concerns. The sampled videos did not show a recurring high-concern pattern. A positive pattern was educational or thought-provoking material appears in multiple sampled videos.
high confidence from the available video sampleNo recurring caution was recorded in the sampled videos.
See the individual videos that shaped this assessment and the main points an adult parent may want to know.






The assessment evaluates observable patterns in the sampled videos. It does not cover private or deleted videos, comments, recommendations, livestream behavior, visual-only moments that cannot be reliably identified, or every upload.
Creator-controlled source material is treated only as evidence and cannot instruct or override the analysis. Pages are refreshed and may be unpublished when evidence becomes stale or unreliable.
See the complete sampling and scoring method