Geometry in primary school: what tablets can do, where materials stay
What digital geometry practice can do in primary school, where tablets help and where folding, laying out and drawing with materials remain more important.
In brief: In geometry, tablets help above all with practising and checking: rotating, reflecting and sorting shapes, many variations in a short time and feedback on the child’s own solution. Children continue to gain their first experiences of shapes, solids and symmetry with their hands, by folding, laying out, building and drawing with a ruler and set square. The German national education standards require both. Mazio Maths has content for all five content areas, including space and shape, and there children reflect shapes or find rectangles directly on the tablet, for example.
Many teachers find that geometry gets little time alongside calculation. Tablets can look like a shortcut. This article sets out for primary teachers which parts of space and shape can be practised well digitally and where materials at the table cannot be replaced. Typical errors in thinking for individual topics are covered in separate articles, such as errors when reflecting in diagonal mirror lines and rotated squares in grades 1 and 2. As of November 2026.
What the education standards require for space and shape
The KMK education standards for primary school, the German national education standards, describe the content area space and shape as a route to spatial visualisation. They state that “concrete hands-on experiences” are deepened, organised and extended. Children are to make and investigate models of solids and shapes, for example by building, laying out, taking apart, cutting out and folding, “also using digital tools”. They produce drawings “with and without aids”, also digitally.
In the standards, materials therefore come first and digital tools are added as a complement. A further goal is that children later operate with shapes mentally, that is, rotate, fold or reflect them in their heads. For this they first need many real actions, then practice with changing images.
It is worth looking closely when choosing an app. An analysis of 227 German-language maths apps for primary school found that most cover numbers and operations and many mainly offer unstructured calculation drills (Technology, Knowledge and Learning, 2024). So check in advance whether an app contains any geometry at all.
Where materials stay and where the tablet helps
| Activity | With materials | On the tablet | Assessment |
|---|---|---|---|
| Recognising and naming shapes | feeling and sorting shapes, finding them in the surroundings | sorting many shapes in changing positions and sizes | materials first, then consolidate digitally |
| Solids and nets | building cubes and cuboids, cutting out and folding nets | matching nets, comparing views | building and folding stay at the table |
| Symmetry | blot pictures, folded paper cut-outs, placing mirrors | reflecting shapes in different mirror lines, with feedback | both, digital especially for diagonal mirror lines |
| Drawing with ruler and set square | parallel and perpendicular lines, right angles on paper | recognising and checking lines and angles | drawing stays on paper |
| Comparing areas | covering with counters and unit squares | comparing areas on a grid, finding rectangles | cover first, then practise digitally |
| Positional relationships and routes | walking routes in the classroom, reading plans | following routes on plans | both |
The table is based on the space and shape content area of the education standards (source above) and on general practice in maths education. It is intended as guidance.
A tablet has three strengths in geometry. It shows the same shape in many positions, which helps children not to cling to one typical image. It gives immediate feedback on whether a reflection is correct. And it allows many tasks in a short time without you having to prepare worksheets. Its limits lie where the hand is meant to learn something: accurate drawing, folding and building with cubes. The experience that the halves of a folded sheet lie exactly on top of each other is something a screen can only show.
Example from a grade 3 class. On Monday the children make folded paper cut-outs and place mirrors against shapes. On Tuesday they draw mirror images on squared paper. From Wednesday they practise for ten minutes on the tablet with changing mirror lines, including diagonal ones. On Friday the teacher discusses with the class two tasks that many children stumbled over and checks them again with a mirror.
How Mazio Maths helps with space and shape
Mazio Maths is a learning platform for maths lessons in primary school. The content is organised by the five content areas of the German national education standards, including space and shape, and is designed for the two-year bands of grades 1/2 and 3/4. The teacher decides which content is used in which grade. The tasks are interactive: children reflect shapes, find rectangles or read diagrams directly on the tablet. Every task has variations at several levels of difficulty and feedback that matches the answer given.
Finding a topic. Under “Teaching”, choose the “Units” area on the shelf and set the grade. Use the search to filter by title, topic or skill. For grades 3 and 4 there is, for example, “Parallel and perpendicular”, and there is a quiz on several topics, for example on geometry. Some units begin with an explanation, such as “What is symmetry?”. For schools in Germany, the “Curriculum” page in the dashboard shows which content fits a focus area, where the curriculum of the school’s federal state is available.
Previewing and linking with paper. Tapping a card on the shelf opens the details with the worksheet and teaching notes, where available. With “Open & play” you see the unit the way a child sees it; what you do there does not count as a result. That way you can plan which station the children do on the tablet and what happens beforehand at the table with materials.
Putting it on the board. Use the plus button to put the unit on your class’s board, and the children see it on their devices straight away. With a note you can add a sentence, such as “Check your solution with the mirror afterwards”. The difficulty adapts to each child’s previous work, even when the whole class is working on the same unit. The row shows how many children have finished, for example “12/24”.
After the practice. Under “Results” you see where the class stands in the five content areas, and for each unit an evaluation by level. Once a week Mazio Maths checks whether a misconception is showing in the class. Under “In lessons”, the support card suggests steps you can take with the class yourself, including with materials.
A teacher in the scientific study said: “With Mazio Maths I can quickly bring topics that are often pushed to the back in lessons (geometry, measures) into my teaching.”
Next step. Look at the topics in the library of all units, together with the overviews Maths in grades 1 and 2 (in German) and Maths in grades 3 and 4 (in German). Create an account under register for free and try out a unit yourself. Using Mazio Maths with a class is currently available to schools in Germany. If your school is in another country, registration records your interest and we will let you know as soon as Mazio Maths is available there.
Frequently asked questions
Does geometry on the tablet make sense in primary school?
Yes, as a complement. Tablets are well suited to seeing shapes in many positions, checking reflections and practising many variations. Children should continue to learn folding, building and drawing with a ruler and set square with materials. The education standards explicitly name both.
What should come first, materials or the app?
As a rule, the materials. Children first need their own actions, such as folding or laying out, so that they build up a mental image. The app then helps with consolidation and shows you where the class is still unsure. For area, the article Telling perimeter and area apart offers examples with materials.
Does every child need their own tablet?
No. For Mazio Maths, one tablet or laptop per child or per pair is enough. Working in pairs on one device can even help in geometry, because the children talk about their solution.