title: Using online citizen science to develop students' science capabilities

authors: Anderson, Dayle

subjects: Social Sciences

abstract: In 2018, a research project funded by New Zealand’s teaching and learning research initiative (TLRI) explored the impact of online citizen science (OCS) projects on the science educa primary school children in New Zealand. This article provides an intion of depth case study from this project in order to share ways in which one teacher used OCS projects specifically to develop students’ science capability, ‘critique evidence’. Comparin g data from students’ conversations and work with the progress indicators for the science capabilities released by the Ministry of Education in 2019 suggests that many of the students were achieving at or above the expected level. We suggest that teacher p rofessional learning and development in relation to the intent of science in the NZC, and the purpose of the science capabilities, was a significant enabler.

text: Using online citizen science to develop students' science capabilities In 2018, a research project funded by New Zealand’s teaching and learning research initiative (TLRI) explored the impact of online citizen science (OCS) projects on the science educa primary school children in New Zealand. This article provides an intion of depth case study from this project in order to share ways in which one teacher used OCS projects specifically to develop students’ science capability, ‘critique evidence’. Comparin g data from students’ conversations and work with the progress indicators for the science capabilities released by the Ministry of Education in 2019 suggests that many of the students were achieving at or above the expected level. We suggest that teacher p rofessional learning and development in relation to the intent of science in the NZC, and the purpose of the science capabilities, was a significant enabler.

year: 2020-01-01
This is an author’s accepted version of an article published in the Curriculum Matters. © 2020 NZCER

title: Simple harmonic error cancellation in time of flight range imaging

authors: Streeter, Lee

subjects: Three-dimensional image acquisition

abstract: Amplitude modulated continuous wave (AMCW) time of flight (ToF) range imaging provides a full field of distance measurement, but common hardware is implemented with digital technology which leads to unwanted harmonic content, a principle source of error in the distance measurements. Existing strategies for correction of harmonics require auxiliary measurements and amplify noise. A small modification of the data acquisition procedure is described which, intrinsically, is invariant to at least one harmonic. The third harmonic, the main cause of harmonic error, is targeted. Compared to traditional measurements the third harmonic is eliminated with no significant increase in noise variance observed.

text: Simple harmonic error cancellation in time of flight range imaging Amplitude modulated continuous wave (AMCW) time of flight (ToF) range imaging provides a full field of distance measurement, but common hardware is implemented with digital technology which leads to unwanted harmonic content, a principle source of error in the distance measurements. Existing strategies for correction of harmonics require auxiliary measurements and amplify noise. A small modification of the data acquisition procedure is described which, intrinsically, is invariant to at least one harmonic. The third harmonic, the main cause of harmonic error, is targeted. Compared to traditional measurements the third harmonic is eliminated with no significant increase in noise variance observed.

year: 2015

title: Māori loanwords: a corpus of New Zealand English tweets

authors: Trye, David

abstract: Māori loanwords are widely used in New Zealand English for various social functions by New Zealanders within and outside of the Māori community. Motivated by the lack of linguistic resources for studying how Māori loanwords are used in social media, we present a new corpus of New Zealand English tweets. We collected tweets containing selected Māori words that are likely to be known by New Zealanders who do not speak Māori. Since over 30% of these words turned out to be irrelevant (e.g., mana is a popular gaming term, Moana is a character from a Disney movie), we manually annotated a sample of our tweets into relevant and irrelevant categories. This data was used to train machine learning models to automatically filter out irrelevant tweets.

text: Māori loanwords: a corpus of New Zealand English tweets Māori loanwords are widely used in New Zealand English for various social functions by New Zealanders within and outside of the Māori community. Motivated by the lack of linguistic resources for studying how Māori loanwords are used in social media, we present a new corpus of New Zealand English tweets. We collected tweets containing selected Māori words that are likely to be known by New Zealanders who do not speak Māori. Since over 30% of these words turned out to be irrelevant (e.g., mana is a popular gaming term, Moana is a character from a Disney movie), we manually annotated a sample of our tweets into relevant and irrelevant categories. This data was used to train machine learning models to automatically filter out irrelevant tweets.

year: 2019