Problem SlipsAddition Working Charts
The first photo is the maker's own. The other shots are illustrative.
Inv. no. NIE-559524
- Maker
- Nienhuis Montessori, since 1929
- Approval
- AMI
- Containers
- Clear acrylic with hinged lids
- Problem Cards
- Durable cardstock with braille elements
- EAN
- 8719924029739
Final price incl. VAT. Delivery €5.90, €71.10 to go for free delivery.
Advice, warranty and returns are handled by us.
Why it costs €77.90
Behind the price of the original are things you can check yourself.
AMI approval
The material is approved by the Association Montessori Internationale (AMI). Nienhuis has made Montessori materials since 1929.
A verifiable original
The EAN 8719924029739 is on the box. It is the maker's number, not ours.
Problem Slips in a child's hands
Rooted in Montessori pedagogy, this addition problem slip set aids the child's work with the Addition Working Charts, providing systematic practice cards organized in clear acrylic containers. Each compartment holds equation cards featuring single and double-digit addition problems with tactile braille elements, and children learn to progress from concrete manipulation to abstract mathematical thinking while developing computational fluency.
Mathematical Abstraction
Bridges the gap between concrete manipulatives and abstract number operations through systematic problem-solving practice.
Memory Development
Repeated work with equation cards strengthens recall of addition facts and number combinations.
Organization Skills
The compartmented storage system teaches children to organize materials systematically and maintain mathematical order.
Tactile Learning
Braille elements on cards provide multi-sensory engagement, supporting diverse learning styles and inclusive education.
How to present it
Place the acrylic container on a mat with the Addition Working Chart. Ensure equation cards are organized by difficulty level in their compartments. Have a pencil and answer sheet ready.
- 1Select a compartment of problem slips appropriate to current skill level
- 2Remove one equation card and read the problem, feeling the braille elements
- 3Work out the answer using the Addition Working Chart or mental calculation
- 4Record the equation and answer on paper
- 5Continue with remaining cards in the compartment
- 6Return completed cards to their compartment when finished
3 tips for parents
- Resist correcting errors immediately - allow discovery through chart verification
- Celebrate completion of compartments rather than speed of solving
- Support home practice by creating similar equation cards for familiar number combinations
If you are not sure it suits your child, we answer in person.
Norbert Kovalčín, founder of Faborino · write to him
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What's in the Box
- Clear acrylic storage containers: Approx. 6 stackable units with compartments
- Addition problem cards: Multiple sets with varying difficulty levels
- Container labels: Red plus symbols for identification
Size and material
| Packaging | 15 × 9 × 4 cm |
| Containers | Clear acrylic with hinged lids |
| Problem Cards | Durable cardstock with braille elements |
| Recommended Age | 3-6 years |
Care
Wipe containers with damp cloth; keep cards dry
Frequently Asked Questions
What is included in the Problem Slips Addition set?
The set includes systematically organized addition equation cards in clear acrylic containers. Each compartment contains problem slips featuring single and double-digit addition problems with tactile braille elements, designed to work seamlessly with the Addition Working Charts.
How do these problem slips support mathematical development?
The problem slips guide children from concrete manipulation to abstract thinking by providing structured practice opportunities. The tactile braille elements offer sensory feedback, while the systematic organization helps children build computational fluency through repeated, meaningful practice.
Are these problem slips suitable for children who cannot read?
Yes, the tactile braille elements and visual number representations allow pre-readers to work with the material. Children can match the problem slips to the Addition Working Charts using pattern recognition and the tactile features before developing reading skills.
How many problem slips are included and how are they organized?
The set includes comprehensive coverage of addition equations organized in clear acrylic containers with separate compartments. Problems progress systematically from simple single-digit additions to more complex double-digit problems, allowing children to work at their own pace.
Can these problem slips be used independently of the Addition Working Charts?
While designed specifically to complement the Addition Working Charts, these problem slips can be used for additional practice activities such as sorting, matching, or creating equation books. However, they achieve maximum educational benefit when used with the corresponding charts.
Product safety
Manufacturer: Nienhuis Montessori, Anders Celsiusstraat 15, 7442 PB Nijverdal, Netherlands
Problem Slips