The two groups were equivalent in van Hiele level at pretest except for obtuse angles, where the control group scored significantly higher before instruction¶
Claim · All claims
Evidence · 1 study · causalr2·q2
Currency · newest study 2013 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q2 i? Pretests 1 and 2 showed no significant group differences, but pretest 3 showed the control group (M = 0.92, SD = 0.80) performing significantly better than the experimental group (M = 0.44, SD = 0.51), t(29) = -2.07, p = .05. → Poh Geik Tieng & Leong Kwan Eu 2013
Evidence¶
Poh Geik Tieng & Leong Kwan Eu 2013¶
Poh Geik Tieng & Leong Kwan Eu. (2013). Improving Students' Van Hiele Level Of Geometric Thinking Using Geometer's Sketchpad. The Malaysian Online Journal of Educational Technology, 2(3). www.mojet.net. https://eric.ed.gov/?id=EJ1086363
q2 · i? · causal · r2
Independent samples t-tests on pretests before intervention. Pretest 1: t(29) = -0.40, p = 0.69, effect size 0.01; pretest 2: t(24.88) = 0.86, p = 0.40, effect size 0.03; pretest 3 significant at p = .05 with effect size 0.13, control group higher.
"the results of the t-test for pretest 3 showed that there is a significant different between the mean van Hiele's level of geometric thinking of the experimental group (M = 0.44, SD = 0.51) and the control group (M = 0.92, SD = 0.80), t (29) = -2.07, p = .05"
Discussion¶
Related Claims¶
- Year Three students taught angles with Geometer's Sketchpad improved significantly in van Hiele level of geometric thinking from pretest to posttest on all three angle concepts — related
- Students' ICT literacy showed no significant correlation with their van Hiele level of geometric thinking after Geometer's Sketchpad instruction — related
- Post-test van Hiele levels did not differ significantly between the Geometer's Sketchpad group and the traditional instruction group on any angle concept — related
- Within the experimental group, van Hiele levels differed significantly across the three posttests, increasing from right to acute to obtuse angle tests — related
- Traditional chalk-and-talk instruction also produced significant pre-to-post gains in van Hiele level of geometric thinking on all three angle concepts — related
- Before the intervention, the control and experimental groups were statistically equivalent in geometric thinking — related
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