Horizontal and vertical reflection.PNG



Main Ideas


1. What is reflection?






















2. Geogebra - Reflection
Please wait for this to load - it may take a few minutes.

















































3. My Geogebra - Koru for Reflection in x and y axes





























Reflection of the Koru in the mirror line (y axis)
Reflection in y axis.jpg





Reflection of the Koru in the mirror line (x axis)
Reflection in x axis.jpg





Multiple Reflections of the Koru in the mirror lines (x and y axes)

Multiple Reflections.jpg




Vocabulary:
  • reflection
  • object e.g. ABC
  • image e.g. A'B'C'
  • mirror line
  • y-axis
  • x-axis
  • invariant
  • orientation
  • axis of symmetry
  • vertical reflection
  • horizontal reflection


Use the online maths dictionary and write definitions of the words above when doing a reflection.Link to Online Maths Dictionary http://www.amathsdictionaryforkids.com/dictionary.html
Note: It is important when describing a reflection to refer to the location of the mirror line (which must also be shown).


Watch the Youtube below then do the following exercise.









Exercise:
  1. Click on the links below to see photos of kowhawhai on picasa.
  2. Find the mirror line in the following.
  3. Is it a horizontal or vertical reflection or both?
  4. Describe the reflection using the correct language.

1. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075730637429295570
2. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729318874335282
3. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729756960999570
4. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729756960999602
5. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729761255966914
6. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729963119429858
7. http://picasaweb.google.com/waikowhai/KowhaiwhaiNewZealandMaoriRafterPatterns#5075729967414397186


Worksheet





Horizontal Reflection.PNG