title: Promoting mental model building in astronomy education

authors: Taylor, Ian

abstract: While astronomy has recently re-emerged in many science curricula, there remain unresolved teaching and learning difficulties peculiar to astronomy education. This paper argues that mental model building, the core process in astronomy itself, should be reflected in astronomy education. Also, this crucial skill may promote a better understanding of the nature of science by pupils and it resonates with current understandings about pupils' learning in science. However, three practical questions to be considered are: the expressed reservations about the connection between mental model building and meaningful learning; the earliest age of pupils for whom mental model building is appropriate; and the lack of research into pupils' prior ideas about the role of models in science. The paper describes how a four-phase general pedagogical strategy was adopted to create an astronomy teaching and learning package to promote mental model building. The package consists of notes explaining the mental model building followed by an overview of the teaching-learning approach and suggested outlines of the 12 lessons. Research investigated whether that package can help Year 7-8 pupils interrogate and refine their mental models of the Sun-Earth-Moon system within the constraints of an ordinary class of 33 pupils. The results showed that all four phases of the general strategy were necessary and effective in that most pupils were able successively and successfully to critique their mental models of the Sun-Earth-Moon system while also achieving traditional astronomy knowledge goals. Implications are that pupils as young as Year 7-8 may be able to construct other appropriate mental models, such as those for biological populations, atomic structure and plate tectonics.

text: Promoting mental model building in astronomy education While astronomy has recently re-emerged in many science curricula, there remain unresolved teaching and learning difficulties peculiar to astronomy education. This paper argues that mental model building, the core process in astronomy itself, should be reflected in astronomy education. Also, this crucial skill may promote a better understanding of the nature of science by pupils and it resonates with current understandings about pupils' learning in science. However, three practical questions to be considered are: the expressed reservations about the connection between mental model building and meaningful learning; the earliest age of pupils for whom mental model building is appropriate; and the lack of research into pupils' prior ideas about the role of models in science. The paper describes how a four-phase general pedagogical strategy was adopted to create an astronomy teaching and learning package to promote mental model building. The package consists of notes explaining the mental model building followed by an overview of the teaching-learning approach and suggested outlines of the 12 lessons. Research investigated whether that package can help Year 7-8 pupils interrogate and refine their mental models of the Sun-Earth-Moon system within the constraints of an ordinary class of 33 pupils. The results showed that all four phases of the general strategy were necessary and effective in that most pupils were able successively and successfully to critique their mental models of the Sun-Earth-Moon system while also achieving traditional astronomy knowledge goals. Implications are that pupils as young as Year 7-8 may be able to construct other appropriate mental models, such as those for biological populations, atomic structure and plate tectonics.

year: 2003

title: Developing and testing a cost-effectiveness analysis to prioritize green infrastructure alternatives for climate change adaptation

authors: Reu Junqueira, Juliana

subjects: Green infrastructure

abstract: Green infrastructure has been increasingly identified as an option to help manage climate change impacts in urban areas, although its implementation is still not widely promoted in urban planning. This is because of the lack of detailed analysis for decision-makers regarding construction and maintenance costs for different types and how effective various measures are at managing precipitation at a catchment scale. This paper contributes to fill this gap in knowledge by developing a green infrastructure cost-effectiveness ranking index (GICRI) able to evaluate the stormwater runoff volume reduction of multiple green infrastructure alternatives under different climate change scenarios, over differing spatial configurations and combining this performance data with their construction and maintenance costs. After applying this model over two case study areas, this paper provides three main insights. First, climate change projections have a significant impact on green infrastructure cost-effectiveness. Second, as green infrastructure cost-effectiveness is influenced by the spatial scale, there are different challenges for larger cities and smaller regional towns. Building on this, the paper argues that GICRI can be a simple and fast heuristic to increase the use of green infrastructure by informing decision-makers regarding how and where to prioritize investment or where greater modelling is needed.

text: Developing and testing a cost-effectiveness analysis to prioritize green infrastructure alternatives for climate change adaptation Green infrastructure has been increasingly identified as an option to help manage climate change impacts in urban areas, although its implementation is still not widely promoted in urban planning. This is because of the lack of detailed analysis for decision-makers regarding construction and maintenance costs for different types and how effective various measures are at managing precipitation at a catchment scale. This paper contributes to fill this gap in knowledge by developing a green infrastructure cost-effectiveness ranking index (GICRI) able to evaluate the stormwater runoff volume reduction of multiple green infrastructure alternatives under different climate change scenarios, over differing spatial configurations and combining this performance data with their construction and maintenance costs. After applying this model over two case study areas, this paper provides three main insights. First, climate change projections have a significant impact on green infrastructure cost-effectiveness. Second, as green infrastructure cost-effectiveness is influenced by the spatial scale, there are different challenges for larger cities and smaller regional towns. Building on this, the paper argues that GICRI can be a simple and fast heuristic to increase the use of green infrastructure by informing decision-makers regarding how and where to prioritize investment or where greater modelling is needed.

year: 2022-11-23

title: Merea Wikiriwhi and George Thomas Wilkinson

authors: Hart, Philip

abstract: Merea Wikiriwhi was one of the few women to invest in Te Aroha mining. Her life has been traced in as much detail as can be found because so little has survived about the lives of Maori women. As George Thomas Wilkinson’s surviving diaries reveal his importance in her life, his story was included as well, concentrating on his personal life rather than his official career. 
Merea was a member of several Ohinemuri hapu, with links through whakapapa to some of their more senior rangatira. Mostly living at or near Waitoki, between Paeroa and Te Aroha, she lived a frugal life, not wasting the income she received from land sales. These sales first required her to insist on her rights both in the land court and in a convoluted legal battle over a will signed in her favour by a distant relative. Over time, she would sell most of her land, but never became entirely landless. She invested in only one mining claim, but in the 1930s joined others to claim that the government was not paying them goldfields revenue for land they had sold.
George Thomas Wilkinson entered her life in 1880, when he was the ‘native agent’ in Hauraki. Despite having fought against Maori and nearly being killed, his surviving diaries reveal that he lived in the manner of a Pakeha Maori with three Maori women (simultaneously for a time), having children both by Merea and the woman he would eventually marry. Wilkinson had close friendships with many Maori and Pakeha Maori, and his genuine regard for them is reflected not only in his attempting, in his official capacity, to be fair to their interests – even as he assisted the government to separate them from their land – but in particular by his affection for a young girl, Wairingiringi, who shared his house in Thames. Although he and Merea would part, he tried to ensure that her children, like all his children, would do well in a Pakeha world.

text: Merea Wikiriwhi and George Thomas Wilkinson Merea Wikiriwhi was one of the few women to invest in Te Aroha mining. Her life has been traced in as much detail as can be found because so little has survived about the lives of Maori women. As George Thomas Wilkinson’s surviving diaries reveal his importance in her life, his story was included as well, concentrating on his personal life rather than his official career. 
Merea was a member of several Ohinemuri hapu, with links through whakapapa to some of their more senior rangatira. Mostly living at or near Waitoki, between Paeroa and Te Aroha, she lived a frugal life, not wasting the income she received from land sales. These sales first required her to insist on her rights both in the land court and in a convoluted legal battle over a will signed in her favour by a distant relative. Over time, she would sell most of her land, but never became entirely landless. She invested in only one mining claim, but in the 1930s joined others to claim that the government was not paying them goldfields revenue for land they had sold.
George Thomas Wilkinson entered her life in 1880, when he was the ‘native agent’ in Hauraki. Despite having fought against Maori and nearly being killed, his surviving diaries reveal that he lived in the manner of a Pakeha Maori with three Maori women (simultaneously for a time), having children both by Merea and the woman he would eventually marry. Wilkinson had close friendships with many Maori and Pakeha Maori, and his genuine regard for them is reflected not only in his attempting, in his official capacity, to be fair to their interests – even as he assisted the government to separate them from their land – but in particular by his affection for a young girl, Wairingiringi, who shared his house in Thames. Although he and Merea would part, he tried to ensure that her children, like all his children, would do well in a Pakeha world.

year: 2016