title: An evidence-based approach to secondary school science: Online citizen science and the science capabilities

authors: Buntting, Catherine Michelle

abstract: As part of a multiyear research project investigating the affordances of online citizen science (OCS) projects for enhancing school students’ learning in relation to science and digital technology, teacher–researchers have designed and implemented classroom interventions incorporating one or more OCS projects. The project is situated in New Zealand, and each intervention has embedded an OCS project within a wider unit of learning focusing on one or more “science capabilities” (Ministry of Education, n.d.). This article presents one of the case studies generated in the wider project. It is of a Year 9 class that engaged with the OCS project Planet Four as part of a wider inquiry unit emphasising the science capability Use evidence: “Can humans live on Mars?” The findings demonstrate that a deliberate focus on using evidence throughout the unit gave students multiple opportunities to practise and develop this science capability within the engaging context of space travel.

text: An evidence-based approach to secondary school science: Online citizen science and the science capabilities As part of a multiyear research project investigating the affordances of online citizen science (OCS) projects for enhancing school students’ learning in relation to science and digital technology, teacher–researchers have designed and implemented classroom interventions incorporating one or more OCS projects. The project is situated in New Zealand, and each intervention has embedded an OCS project within a wider unit of learning focusing on one or more “science capabilities” (Ministry of Education, n.d.). This article presents one of the case studies generated in the wider project. It is of a Year 9 class that engaged with the OCS project Planet Four as part of a wider inquiry unit emphasising the science capability Use evidence: “Can humans live on Mars?” The findings demonstrate that a deliberate focus on using evidence throughout the unit gave students multiple opportunities to practise and develop this science capability within the engaging context of space travel.

year: 2022

title: Effects of Gas Nitriding on Fatigue and Crack Initiation of Ti6Al4V produced by Selective Laser Melting

authors: Mukhtar, Aamir

subjects: Science & Technology

abstract: Selective laser melting (SLM) is an additive manufacturing technique which permits fabrication of three dimensional parts by selectively melting consecutive layers of metallic powder. This allows the production of parts with high geometrical complexity. Titanium alloy Ti-6Al-4V (Ti64) is widely used in industry due to its high strength-to-mass ratio, corrosion resistance and biocompatibility. SLM increases the application range of Ti64 because of its flexibility for prototyping any part and its low material waste. Nitriding is a diffusion-based thermo-chemical treatment for interstitial hardening of the surface of Ti64 alloy products. This study characterized the fatigue behaviour of SLM-produced Ti64 nitrided and annealed bars in as-built and machined surface conditions. The surface of the SLM-produced Ti64 parts after gas nitriding showed high values of micro-hardness up to 550 HV just below the surface. Fatigue testing was performed to assess the materials fatigue strength and fractographic imaging was used to examine fracture surface and nitride layer characteristics. Nitriding was found to reduce the fatigue strength of the samples to a similar level irrespective of being in the as-built or machined condition. The effect of nitriding on crack initiation and growth at various stress levels under fatigue loading was investigated.

text: Effects of Gas Nitriding on Fatigue and Crack Initiation of Ti6Al4V produced by Selective Laser Melting Selective laser melting (SLM) is an additive manufacturing technique which permits fabrication of three dimensional parts by selectively melting consecutive layers of metallic powder. This allows the production of parts with high geometrical complexity. Titanium alloy Ti-6Al-4V (Ti64) is widely used in industry due to its high strength-to-mass ratio, corrosion resistance and biocompatibility. SLM increases the application range of Ti64 because of its flexibility for prototyping any part and its low material waste. Nitriding is a diffusion-based thermo-chemical treatment for interstitial hardening of the surface of Ti64 alloy products. This study characterized the fatigue behaviour of SLM-produced Ti64 nitrided and annealed bars in as-built and machined surface conditions. The surface of the SLM-produced Ti64 parts after gas nitriding showed high values of micro-hardness up to 550 HV just below the surface. Fatigue testing was performed to assess the materials fatigue strength and fractographic imaging was used to examine fracture surface and nitride layer characteristics. Nitriding was found to reduce the fatigue strength of the samples to a similar level irrespective of being in the as-built or machined condition. The effect of nitriding on crack initiation and growth at various stress levels under fatigue loading was investigated.

year: 2019

title: Ngā Ara Auaha  - Creative practice student showcase

authors: Hill, Rodrigo

abstract: Ngā Ara Auaha simply translated means 'creative pathways' and comprises a collective exhibition featuring creative works from last year's undergraduate and postgraduate students across the University and working with creative practice research and outputs.

Ngā Ara Auaha is an annual student showcase, exhibiting the creative works of University of Waikato students (both undergraduate and postgraduate). The exhibition’s title refers to the ‘creative pathways’ taken by these students who have drawn on their own various creative practices, modes, and methods to think through their respective research journeys.

The call for submissions was open to students across all faculties and divisions of the University and as such the variety of works is vast. Multiple artistic mediums are featured in the same space, including photography and film, toi Māori, augmented media, fine art, design, and creative writing.

This exhibition showcases both the artistic skill of our students and the potential of creative methodologies in research. Expanding the rigid boundaries of the academy and blurring the lines between the ‘creative and critical’, with contributors adding to an established legacy of creative practice at the University of Waikato.

text: Ngā Ara Auaha  - Creative practice student showcase Ngā Ara Auaha simply translated means 'creative pathways' and comprises a collective exhibition featuring creative works from last year's undergraduate and postgraduate students across the University and working with creative practice research and outputs.

Ngā Ara Auaha is an annual student showcase, exhibiting the creative works of University of Waikato students (both undergraduate and postgraduate). The exhibition’s title refers to the ‘creative pathways’ taken by these students who have drawn on their own various creative practices, modes, and methods to think through their respective research journeys.

The call for submissions was open to students across all faculties and divisions of the University and as such the variety of works is vast. Multiple artistic mediums are featured in the same space, including photography and film, toi Māori, augmented media, fine art, design, and creative writing.

This exhibition showcases both the artistic skill of our students and the potential of creative methodologies in research. Expanding the rigid boundaries of the academy and blurring the lines between the ‘creative and critical’, with contributors adding to an established legacy of creative practice at the University of Waikato.

year: 2024