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חיבור מספרים מכוונים בעזרת חיצים
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מרכז ארצי למורים למתמטיקה בחינוך העל יסודי
GeoGebra
1.) -5 + 4 = ? 2.) -2 + 8 = ? 3.) -4 + 4 = ?
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apec
רישום חופשי
Circumference of a unit circle
Other Variations of Cosine
Rolling a Square
Discover Resources
Probability: Selecting Balls
Square packing problem
Gradient of f(x)=sin(x) in different units
Circumcenter Investigation
a^2-b^2
Discover Topics
Polygons
Geometric Transformations
Congruence
Isosceles Triangles
Subtraction