| --- |
| dataset_info: |
| features: |
| - name: image |
| dtype: image |
| - name: question |
| dtype: string |
| - name: ground_truth |
| dtype: string |
| - name: is_text_only |
| dtype: bool |
| - name: year |
| dtype: int32 |
| - name: class |
| dtype: string |
| - name: task_id |
| dtype: string |
| - name: math_category |
| dtype: string |
| - name: difficulty |
| dtype: string |
| splits: |
| - name: train |
| num_bytes: 158221288 |
| num_examples: 3557 |
| download_size: 152844456 |
| dataset_size: 158221288 |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: data/train-* |
| task_categories: |
| - visual-question-answering |
| language: |
| - de |
| tags: |
| - Känguruh-Wettberwerb |
| - math |
| - vlm |
| - school |
| --- |
| |
| # Känguruh Wettbewerb Dataset |
|
|
| This dataset is a German benchmark from the official _Känguru der Mathematik_ competition materials covering 1998--2025 [(Link)](https://www.mathe-kaenguru.de). |
| Each instance is a single multiple-choice problem with five options (A - E) from school grade levels 3 - 13. The benchmark targets curriculum-aligned mathematical reasoning in German with explicit visual grounding (diagrams, geometric figures, spatial arrangements) while enabling controlled analyzes by year, grade group, difficulty, math subdomain, and modality. |
|
|
| ### Processing |
|
|
| Collected PDFs are converted into benchmark-instances via the following four-step pipeline: |
|
|
| * 1. Task localization and cropping |
| * 2. Manual screening |
| * 3. Solution alignment |
| * 4. Structured fields and derived labels |
|
|
|
|
| ### Schema and Labels |
|
|
| Each instance contains: |
| * _image_: PNG crop |
| * _answer_: ground-truth option |
| * _year_: task year |
| * _grade_level_: targetet school year of task |
| * _task_id_: task id |
| * _difficulty_: diffulty classes A, B, C |
| * _math_category_: one of arithmetic, geometry, algebra, probability, unknown |
| * _is_text_only_: bool |
| |
| |
| ## Dataset Overview |
| |
| | Statistic | Value | |
| | --- | --- | |
| | Years | 1998 - 2025 | |
| | Grade levels | 3 - 13 (grouped) | |
| | Source PDFs / pages | 140 / 560 | |
| | Answer format | 5-way MC (A - E) | |
| | Total tasks N | 3,557 | |
| | Text-only / visually necessary | 61% / 39% | |
| | Difficulty (A/B/C) | 32.9 / 33.3 / 33.8% | |
| |
| |
| ## Cite as |
| |
| ``` |
| @inproceedings{hug2026kangaroobench, |
| author = {Hug, Dennis and Wolf, Ren\'e and Thomas, Philippe}, |
| title = {KangarooBench: A Native German Benchmark for Evaluating the Modality Gap in Visual Mathematics}, |
| booktitle = {Conference and Labs of the Evaluation Forum (CLEF 2026)}, |
| year = {2026}, |
| note = {To appear} |
| } |
| ``` |
| |
