english
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How many points, segments, triangles and quadrilaterals?
A couple of weeks ago I saw a simple problem in Facebook or Twitter. It was about how many triangles there are were in a picture. I started solving the problem with pen and pencil. I think the original problem looked like this. The question was how many triangles you see in the picture. I Continue reading
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IGCI 2021 talk on Using GeoGebra for Statistic
I am really honored to be invited to this conference. It is always very inspirational to work with teachers from different countries. I think we teachers around the world are very same kind of people. We love our subject, we love the kids, students and we want to help them to get a better life. Continue reading
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The High School Seniors Prom at HYL
On Thursday the 12th graders (3rd graders in high school) left the school. The day is called in Finnish “penkinpainajaiset or penkkarit”. So, the 11th graders became the oldest students at our school. Last months they have been practicing old traditional dances like mazurka, cicapo, polonaise, viennese walz, tango, fireman’s dance, … for the Senior Continue reading
