| 1. |
- Blomqvist, Charlotta, et al.
(författare)
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Att kommunicera om likamedtecknet
- 2013
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Ingår i: Nämnaren. - Göteborg : Nationellt centrum för matematikutbildning. - 0348-2723. ; :4, s. 39-42
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- I denna artikel beskriver en lärare och en forskare sitt arbete med att utveckla den muntliga kommunikationsförmågan inom matematik i en fjärdeklass. Aktionsforskning utgör bakgrunden för arbetet och likamedtecknet står i fokus när eleverna utmanas i sitt matematiska tänkande med hjälp av lappar.
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| 2. |
- Gade, Sharada, 1960-, et al.
(författare)
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From problem posing to posing problems via explicit mediation in Grades 4 and 5
- 2015
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Ingår i: Mathematical problem posing. - New York : Springer Science+Business Media B.V.. - 9781461462576 - 9781461462583 ; , s. 195-213
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Bokkapitel (refereegranskat)abstract
- Drawing upon cultural historical activity theory (CHAT) perspectives,in this chapter we portray a classroom practice of problem posing that evolved with a cohort of students across Grades 4 and 5 in Sweden. In line with a language and literacy pedagogy, the classroom practice in which students utilised textbook vocabulary handed out on slips of paper (lappar in Swedish) advanced through three distinct stages namely: formulating written questions, problem posing as dyads and actively posing problems to one another. Mediated explicitly by lappar, such a practice provided social and public opportunities for students to attribute personal meaning and make conscious use of words in semiotic activity, as well as appropriate cultural meaning and valid norms of use. The increasing gain and display of agency by students in this practice, informed by student(s)-acting-with-lappar-as-mediational-means as unit of analysis, was indicative of their self-regulation, volition and independence. Developmental in approach, such classroom practice was born through teacher–researcher collaboration.
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| 3. |
- Gade, Sharada, 1960-, et al.
(författare)
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Investigating everyday measures through exploratory talk : whole class plenary intervention and landscape study at grade four
- 2018
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Ingår i: Cultural Studies of Science Education. - New York : Springer. - 1871-1502 .- 1871-1510. ; 13:1, s. 235-252
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Tidskriftsartikel (refereegranskat)abstract
- We report an exploratory talk based, whole class plenary intervention, in relation to students' understanding of everyday measures and measurement, in a grade four classroom at a grade 4-6 school in Sweden. Extended, project related, teacher-researcher collaboration forms basis for such cultural historical activity theory or CHAT based efforts. As formative intervention, the conduct of the plenary is not pre-determined but embedded in ongoing curricular realities, with the agency of students and teacher promoted, pedagogical ideas reutilised and the role of researcher viewed as supporting design and growth of the intervention. Under Charlotta's guidance as teacher, the plenary is opportunity for her students to examine improbable scenarios such as, Can Eva and Anton measure the length of Sweden on foot, Can Lars and Iris measure their age in decimeters. A zone of proximal development is created, in which students make the transition from spontaneous to scientific concepts and learn how various units of measurement are objects-that-can-be-used-for-certain-purposes. With opportunity for critical and reflective inquiry, in a plenary designed to lead development, Charlotta's students look beyond the making of rote measurements and articulate a theory of measure in nascent terms. Such a landscape of teaching-learning is finally understood in terms of the nature of talk that was facilitated, the manner of pedagogy utilised, the style of teaching exercised and the kind of learning that was demanded of her students.
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| 4. |
- Gade, Sharada, 1960-, et al.
(författare)
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Shared object and stakeholdership in teacher-researcher expansive learning activity
- 2016
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Ingår i: Proceedings of the 40th Conference of the International Group for the Psychology of Mathematics Education. - Szeged, Hungary : PME. - 9781365458521 ; , s. 267-274
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Konferensbidrag (refereegranskat)abstract
- Cultural historical activity theory (CHAT) perspectives are used to shed light on an extended teacher-researcher collaboration, at a Grade 4-6 school in Sweden. Beginning with participant observation and emerging forms of engagement like co-authorship of research reports, the collaboration is understood as expansive learning activity. Treating the practices of teaching and research as distinct yet collaborating activity systems within this, provides an opportunity to analyse the manner in which joint conduct of project related instructional interventions became shared object. This also enabled teacher and researcher to become active stakeholders in each other's practice. Dialectical realisation of stakeholdership and shared object led to reconceptualisation and transformation of the very horizons of our work.
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| 5. |
- Olander, Susanne, et al.
(författare)
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Angiosarcoma in the breast: a population-based cohort from Sweden
- 2023
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Ingår i: British Journal of Surgery. - : Oxford University Press. - 0007-1323 .- 1365-2168. ; 110:12, s. 1850-1856
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Tidskriftsartikel (refereegranskat)abstract
- Background: Breast angiosarcoma is a rare disease mostly observed in breast cancer (BC) patients who have previously received radiotherapy (RT). Little is known about angiosarcoma aetiology, management, and outcome. The study aim was to estimate risk and to characterize breast angiosarcoma in a Swedish population-based cohort. Methods: The Swedish Cancer Registry was searched for breast angiosarcoma between 1992 and 2018 in three Swedish healthcare regions (population 5.5 million). Information on previous BC, RT, management, and outcome were retrieved from medical records. Results: Overall, 49 angiosarcomas located in the breast, chest wall, or axilla were identified, 8 primary and 41 secondary to BC treatment. Median age was 51 and 73 years, respectively. The minimum latency period of secondary angiosarcoma after a BC diagnosis was 4 years (range 4–21 years). The cumulative incidence of angiosarcoma after breast RT increased continuously, reaching 1.4‰ after 20 years. Among 44 women with angiosarcoma treated by surgery, 29 developed subsequent local recurrence. Median recurrence-free survival was 3.4 and 1.8 years for primary and secondary angiosarcoma, respectively. The 5-year overall survival probability for the whole cohort was 50 per cent (95 per cent c.i., 21 per cent–100 per cent) for primary breast angiosarcoma and 35 per cent (95 per cent c.i., 23 per cent–54 per cent) for secondary angiosarcoma. Conclusion: Breast angiosarcoma is a rare disease strongly associated with a history of previous BC RT. Overall survival is poor with high rates of local recurrences and distant metastasis.
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| 6. |
- Persson, Cecilia, et al.
(författare)
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Lappar och problemställning
- 2016
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Ingår i: Nämnaren. - Göteborg : Nationellt centrum för matematikutbildning (NCM). - 0348-2723. ; :1, s. 39-42
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- I denna artikel beskrivs problemställning i klassrummet, ett utvecklingsarbete som växt fram i årskurs 4 och 5. Två forskningsperspektiv anknyter till detta utvecklingsarbete: problemformulering inom matematikundervisning samt kulturhistorisk aktivitetsteori (CHAT). Med utgångspunkt i elevers användning av ord och tal utdelade på lappar utvecklades en klassrumspraktik som tog avstamp i problem som elever formulerat själva.
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| 7. |
- Rask, Gunilla, et al.
(författare)
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Correlation of tumour subtype with long-term outcome in small breast carcinomas: a Swedish population-based retrospective cohort study
- 2022
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Ingår i: Breast Cancer Research and Treatment. - : Springer Science and Business Media LLC. - 0167-6806 .- 1573-7217. ; 195:3, s. 367-377
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Tidskriftsartikel (refereegranskat)abstract
- Purpose To investigate if molecular subtype is associated with outcome in stage 1 breast cancer (BC). Methods Tissue samples from 445 women with node-negative BC <= 15 mm, treated in 1986-2004, were classified into surrogate molecular subtypes [Luminal A-like, Luminal B-like (HER2-), HER2-positive, and triple negative breast cancer (TNBC)]. Information on treatment, recurrences, and survival were gathered from medical records. Results Tumour subtype was not associated with overall survival (OS). Luminal B-like (HER2-) and TNBC were associated with higher incidence of distant metastasis at 20 years (Hazard ratio (HR) 2.26; 95% CI 1.08-4.75 and HR 3.24; 95% CI 1.17-9.00, respectively). Luminal B-like (HER2-) and TNBC patients also had worse breast cancer-specific survival (BCSS), although not statistically significant (HR 1.53; 95% CI 0.70-3.33 and HR 1.89; 95% CI 0.60-5.93, respectively). HER2-positive BC was not associated with poor outcome despite no patient receiving HER2-targeted therapy, with most of these tumours being ER+. Conclusions Stage 1 TNBC or Luminal B-like (HER2-) tumours behave more aggressively. Women with HER2+/ER+ tumours do not have an increased risk of distant metastasis or death, absent targeted treatment.
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| 8. |
- Söderberg, Emma, et al.
(författare)
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Association of clinicopathologic variables and patient preference with the choice of surgical treatment for early-stage breast cancer : A registry-based study
- 2024
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Ingår i: Breast. - : Elsevier. - 0960-9776 .- 1532-3080. ; 73
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: Observational studies suggest that breast conserving surgery (BCS) and radiotherapy (RT) offers superior survival compared to mastectomy. The aim was to compare patient and tumour characteristics in women with invasive breast cancer <= 30 mm treated with either BCS or mastectomy, and to explore the underlying reason for choosing mastectomy.Methods: Women registered with breast cancer <= 30 mm and <= 4 positive axillary lymph nodes in the Swedish National Breast Cancer Register 2013-2016 were included. Logistic regression analyses were performed to assess the association of tumour and patient characteristics with receiving a mastectomy vs. BCS.Results: Of 1860 breast cancers in 1825 women, 1346 were treated by BCS and 514 by mastectomy. Adjuvant RT was given to 1309 women (97.1 %) after BCS and 146 (27.6 %) after mastectomy. Variables associated with receiving a mastectomy vs. BCS included clinical detection (Odds Ratio (OR) 4.15 (95 % Confidence Interval (CI) 3.35-5.14)) and clinical stage (T2 vs. T1 (OR 3.68 (95 % CI 2.90-4.68)), N1 vs. N0 (OR 2.02 (95 % CI 1.38-2.96)). Women receiving mastectomy more often had oestrogen receptor negative, HER2 positive tumours of higher histological grade. The most common reported reason for mastectomy was large or multifocal tumours (53.5 %), followed by patient preference (34.5 %).Conclusion: Choice of surgery is strongly associated with key prognostic factors among women undergoing BCS with RT compared to mastectomy. Failure to control for all relevant confounders may bias results in outcome studies in favour of BCS.
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