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“The triangle is just skew\dots!". Calculating “skew" areas on the basis of unit squares. (“Das Dreieck ist halt schief\dots!" Auf der Basis von Einheitsquadraten “schiefe" Flächen berechnen.) (German)
Mathematik 5 bis 10 36, 24-27 (2016).
Classification: G33 D83
1
The appeal of errors ‒ infinite chocolate does not exist. (Der Reiz der Fehler ‒ unendlich Schokolade gibt es nicht.) (German)
Mathematikunterricht 62, No. 3, 41-47 (2016).
Classification: D50 D70 E50 G30 F60
2
On a theorem by J. J. Sylvester. (Zu einem Satz von J. J. Sylvester.) (German)
MNU J. 69, No. 2, 118-120 (2016).
Classification: F60 H20
3
The optimal area of a goal. Should football goals be higher and therefore a bit more narrow? (Die optimale Torfläche. Sollten Fußballtore höher und dafür ein bisschen schmaler sein?) (German)
PM Prax. Math. Sch. 58, No. 68, 42-43 (2016).
Classification: D83 H23 G33 D53
4
Rabbits and beautiful rectangles. Learning stations following the “sandwich" principle all about the golden section. (Kaninchen und schöne Rechtecke. Eine Stationenarbeit im “Sandwichprinzip" rund um den Goldenen Schnitt.) (German)
Mathematik 5 bis 10 34, 30-33 (2016).
Classification: D43 D83 F63 I33 G43 H33
5
Digital support. Incorporating digital tools into learning stations. (Digitale Unterstützung. Einbeziehung digitaler Werkzeuge in die Stationenarbeit.) (German)
Mathematik 5 bis 10 34, 20-23 (2016).
Classification: D43 D83 H23 U73
6
The golden bee. (Die Goldene Biene.) (German)
Wurzel 49, No. 9-10, 204-205 (2015).
Classification: G40 G70
7
Optimal parabola over a rectangle. Variation of a classic problem. (Optimale Parabel über einem Rechteck. Variation eines Klassikers.) (German)
MNU, Math. Naturwiss. Unterr. 68, No. 6, 341-343 (2015).
Classification: I44 I54
8
Geometric view connecting determinants and area. (English)
Consortium 108, 1-2 (2015).
Classification: G70 U70 E50
9
Geometry in early years: sowing seeds for a mathematical definition of squares and rectangles. (English)
ZDM, Math. Educ. 47, No. 3, 391-405 (2015).
Classification: G21 U61
10
The analytic eye on a piece of A4-sized paper. (Der analytische Blick auf ein DIN-A4-Blatt.) (German)
PM Prax. Math. Sch. 57, No. 62, 9-13 (2015).
Classification: F53 I34 N53 N54 M93 M94
11
Areas and terms. (Flächeninhalte und Terme.) (German)
PM Prax. Math. Sch. 57, No. 61, 38-39 (2015).
Classification: H23 G33 G43 D83
12
Combinatorics and geometry. Using the Heidelberg angled cross to discover the diagonal properties of quadrilaterals. (Kombinatorik und Geometrie. Diagonaleigenschaften von Vierecken mit dem Heidelberger Winkelkreuz entdecken.) (German)
PM Prax. Math. Sch. 57, No. 61, 12-18 (2015).
Classification: G43 U63
13
Fitting shapes inside shapes: closed but provocative questions. (English)
Math. Sch. (Leicester) 44, No. 2, 12-14 (2015).
Classification: G40 D50
14
“Notable diagonals" ‒ exploratory problems as special offers to support (not only) mathematically gifted students. (“Denkwürdige Diagonalen" ‒ Erkundungsprobleme als Förderangebote (nicht nur) für mathematisch begabte Schülerinnen und Schüler.) (German)
Mathematikunterricht 61, No. 2, 52-58 (2015).
Classification: D40 G90 F60
15
Brilliant ideas of great mathematicians. VII: Al-Khwarizmi’s method to solve quadratic equations. (Geniale Ideen großer Mathematiker. VII: Al-Khwarizmis Methode zur Lösung quadratischer Gleichungen.) (German)
MNU, Math. Naturwiss. Unterr. 68, No. 1, 12-17 (2015).
Classification: H30 A30
16
Dynamic reflections on a well-known type of problems about rectangular enclosures with the largest area under the integration of existing walls. (Dynamische Betrachtungen zu einer bekannten Aufgabe über das flächengrößte, rechteckige Gehege unter Einbindung vorhandener Mauern.) (German)
Mathematikunterricht 61, No. 1, 4-13 (2015).
Classification: G30 G40 G90 H30
17
Using technology to build a pen for Browser. (English)
Math. Teach. Middle Sch. 20, No. 1, 46-50 (2014).
Classification: I23 H23 U73 M93
18
Supporting English learners: lessons from research. (English)
Math. Teach. Middle Sch. 20, No. 1, 30-37 (2014).
Classification: C53 E43 G33
19
The Babylonian method for approximating square roots: why is it so efficient? (English)
Math. Teach. (Reston) 108, No. 3, 230-235 (2014).
Classification: F50 A30 G30 N50
20
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Result 1 to 20 of 263 total

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